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  • pacemaker

    An abbreviation for ‘cardiac pacemaker’. It is a small device implanted in the heart that consists of electrodes. The electrodes emit electrical impulses to regulate the beating of the heart.

  • packaging

    Materials for the packing or protective wrapping of products that contain information or otherwise convey a message about the product. For material used to protect, cushion, or brace objects for safe shipment or storage, carrying no information or message about the objects, use "packing material."

  • packet

    A small package or parcel, usually containing an object or objects.

  • packs of cards

    Use for the aggregation of all playing cards employed in a game. HOYL91.

  • paddle (watercraft equipment)

    Short slender shaft usually with a handle at one end and a flat round-tipped blade at the other used in a vertical manner to propel small boats; may be double-ended; for longer but similar devices with flat-tipped blades, use "oars."

  • paddle steamer

    Steam-powered watercraft propelled by a pair of paddle wheels mounted amidships or by a single paddle wheel at the stern; developed in the late 18th century

  • paediatrics

    The branch of medicine dealing with the medical care of children, infants and adolescents. The patient age limit is usually 14-18, depending on the country. A medical practitioner who specializes in this area is known as a paediatrician.

  • paint

    Any dispersion of pigment in a liquid binder. Paint is applied with a brush, roller, sprayer, or by dipping and dries to form a decorative or protective film.

  • pamphlet

    Complete, nonperiodical printed works generally of fewer than 80 pages, often with a paper cover, sometimes short treatises on arguments or topics of current interest. For smaller printed works, of one sheet folded and not stitched or bound, use "leaflets."

  • pamphlets

    Use for complete, nonperiodical printed works generally of fewer than 80 pages, often with a paper cover, sometimes short treatises on arguments or topics of current interest. For smaller printed works, of one sheet folded and not stitched or bound, use "leaflets."

  • pan - container

    Metal, earthenware, or plastic container, generally for domestic use, that are usually broad, shallow and open.

  • pandemic

    An epidemic that occurs over a wide geographic area and affects an exceptionally high proportion of the population.

  • panel (wood)

    Wood in the form of broad, thin, flat or sometimes curved pieces as, for example, in polyptychs, doors, and plywood construction.

  • pannier

    A large basket, sometimes arranged in pairs and carried on the shoulders or, commonly, on a motorcycle or bicycle.

  • pannikin

    Small earthenware or now metal drinking vessels.

  • pantograph - drawing instrument

    Devices consisting of four strips of wood or some other material which are hinged together in a square so that they overlap and can be adjusted to the scale of the work being copied, enlarged, or reduced.

  • pap boat

    A small receptacle for feeding pap to infants and invalids. Boat shaped container with one end having an extending lip for placing the mouth.

  • paper knife

    Instruments with a narrow knifelike blade and often ornamented handle used for cutting paper and opening envelopes.

  • paperweight

    Small, heavy object of glass, metal, or the like placed on papers to keep them from scattering.

  • parallel rule - drafting tool

    Drafting tool for drawing straight parallel lines, generally consisting of ungraduated strips of wood, metal, or plastic guided along drafting boards and held parallel by wires or strings passing through the ends of the rules; may or may not slide on rollers. For a set of two attached and pivoting rulers used often as navigational aids to transfer parallel lines, prefer "parallel rulers."

  • paralysis

    The loss of function in one or more muscle groups. It causes loss of mobility and feeling.

  • parasite

    An organism which obtains food and shelter from another organism. The second organism is known as the host. The host is harmed in some way by the parasite. Examples of human parasites include the tape worm and the head louse.

  • paratyphoid fever

    A prolonged illness commonly caused by a form of salmonella. It is similar to typhoid fever but less severe.

  • parcels van

    A railway vehicle dedicated to the carriage of parcels and similar traffic.

  • parcels waybill

    A label attached to a parcel in transit to indicate destination, consignee etc.

  • parliamentary paper

    Use for documents presented to parliament

  • parturition

    The act or process of giving birth to a child

  • parturition chair

    Chair used during parturition, a seat in which a mother may give birth to her child

  • pass

    A railway ticket or other device permitting the holder to travel (usually without charge or at a concessionary fare).

  • passenger communication cord

    An early means of passenger alarm communication with driver and guard.

  • passimeter

    A free-standing kiosk in the ticket hall of a station, designed to combine facilities for issuing tickets on entry and checking them on exit and equipped with turnstiles operated by the booking clerk.

  • pastille

    A small medicated or flavoured tablet.

  • pastille burner

    used to burn substances with deodorising or fumigating properties

  • patent

    Grants made by a government to an inventor, assuring the inventor the sole right to make, use, and sell the invention for a certain period of time.

  • pathological anatomy

    The branch of anatomy concerned with the structural changes of the body that accompany disease. Pathological anatomy became central to medical research in the 1800s.

  • pathology

    The branch of medicine concerned with disease, especially its structure and effects on the body.

  • patient history

    The case history and background of a medical patient. Knowing what illnesses the patient has had can help a doctor make a diagnosis about their current condition.

  • patient trolley

    used to transport patients between wards and departments

  • patron saint

    A saint believed to protect or guide a place or particular group of people.

  • pay check

    An engraved or embossed metal token used to establish identity when collecting a pay packet.

  • pay envelope

    An envelope, often perforated, that is used to make cash payments to employees.

  • pay tin

    A storage device (usually metal) into which an employee's wages would be dispensed to await collection. Often bears the employee's name or number or occupation.

  • pedigrees

    Charts or lists showing lineage, especially those showing the ancestors of purebred animals. AHD.

  • pedometer

    Instruments that record the number of paces taken when walking or running and, when adjusted for an individual's pace length, can provide a rough measure of the distance travelled.

  • peep show

    Optical toys that give the illusion of depth and action by the use of one or more magnifying lenses or mirrors set in a boxlike enclosure and viewed through a small opening on one end.

  • pen - drawing and writing

    Hand-held instrument for writing or drawing with a colored fluid such as ink. A pen generally comprises a handle or holder and a pointed tip for distributing the fluid on the drawing surface. The term may also refer to an instrument for machine-controlled writing or drawing with ink.

  • pencil - drawing and writing equipment

    Rods of a marking substance, enclosed in wood, plastic, or metal, and used for writing or drawing.

  • pendant

    Hanging articles of jewellery, usually suspended from a necklace, but also includes Renaissance examples fastened to the sleeve often worn as decorative ornaments; can also be an article of devotional, magical, or mourning jewelry which then may sometimes be concealed under clothing.

  • pendulum balance - scales

    Type of balance weighing scale, which is self-indicating, that works on the principle a pivoted off-set beam being displaced by a set amount against a set mass. The so-called pendulum can than be used to indicate the weight from the vertical against a moving scale or through linkages to a fixed one. Often used for postal scales.

  • pendulum clock

    Any type of clock whose timekeeping is regulated by the swinging movement of a pendulum

  • penicillin

    The first antibiotic drug to treat infections which is made from the mould penicillium. Its discovery is attributed to Alexander Fleming in 1928.

  • penicillium mould

    A collective growth of penicillium caused by bacteria. This was how penicillin was first discovered and grown by Alexander Fleming.

  • pennies

    English coins of silver, derived from Roman denarii, issued from the late 8th to the 17th century and then of copper or bronze from the 18th century until 1967, when they were replaced by a new decimal penny; for equivalent French silver coins introduced in the 8th century, use "deniers."

  • percolators

    Coffeepots in which boiling water rising through a tube is repeatedly deflected downward through a perforated basket containing ground beans to extract their essence. W.

  • percussion

    Practice where a doctor taps on parts of the patient’s body with his fingers or an instrument called a plessor. The resulting sounds and vibrations reveal the presence of fluid or tissue that has hardened.

  • percussor

    A small hammer, usually with soft rubber head, used to tap the body directly, in percussion of the chest or other part.

  • perfusion pump

    used for artifical perfusion

  • period

    Common term for vaginal bleeding, which happens once a month as part of a female's menstrual cycle. Periods usually last from one to five days and begin when a girl reaches puberty.

  • periodical

    A magazine or journal that is published at various intervals.

  • permanent way callipers

    A pair of hinged arms for measuring small distances (e.g. rail web thickness).

  • permanent way gauge

    A tool for measuring the profile of a rail, rail key, fishplate or other permanent way component.

  • personal computer

    Desk-top or portable computers, based on a microprocessor and meant for a single user.

  • Personal Information Carrier

    A biometric card containing medical history and personal details of the carrier.

  • personal weigher

    weighing machine or device specifically for determing the weight of an individual person, usually but not always in a domestic environment. Characterised by weighing platform or chair, based on the steelyard lever principle (Distinct from bathroom scales)

  • pessary

    An object placed in the vagina and used to deliver medicine, as a contraceptive or as a muscle support.

  • pestle

    An elongated piece of hard material usually made of stone. A pestle is used for grinding pigments, herbs, spices or other materials in a mortar.

  • Petri dish

    A shallow dish used in science to grow micro-organisms. A Petri dish is circular, transparent and has a lid.

  • petrol locomotive

    An internal combustion driven locomotive powered by burning petrol.

  • pH and blood gas analyser

    A machine used to detect the pH level of blood. The pressure of oxygen and carbon dioxide can also be measured.

  • phage typer

    A machine used to identify phages - a virus that attacks bacteria.

  • phallus

    An object shaped like a penis

  • pharmacology

    The branch of medicine concerned with the uses, effects, and modes of action of drugs.

  • pharmacy

    The preparation and medicinal dispensing of drugs.

  • pharmacy cabinet

    Used to store equipment and drugs in a pharmacy

  • phenakistoscope

    Simple animation device, a predecessor to the zoetrope, which was simultaneously invented in 1831 by both Joseph Plateau in Belgium and Simon von Stampfer in Austria. It relies on the persistence of vision in viewing a rotating card to give the illusion of motion.

  • phenethicillin

    first commercially available semi synthetic penicillin

  • phlegm

    Mucus produced by the respiratory system, and expelled by coughing. Healthy phlegm is normally clear and white.

  • photogenic drawing

    Use for Talbot's process in which paper negatives were produced by printing out a silver image. Distinguished from "calotype," in which the image is developed. In the mid-19th century, sometimes used as a synonym of photography.

  • photograph

    Refers to still images produced from radiation-sensitive materials (sensitive to light, electron beams, or nuclear radiation), generally by means of the chemical action of light on a sensitive film, paper, glass, or metal.

  • photograph album

    Use for a collection of a series of photographs, generally in a book, or for a device which hold a series of photographs.

  • photographic lens

    Photographic lens (also known as objective lens or photographic objective) is an optical lens or compound lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.

  • photographic print

    Opaque photograph, usually positive (i.e., reproducing appearances without tonal reversal, otherwise use 'negative prints'), usually on paper, and generally, but not always, printed from a negative.

  • photoheliograph

    An instrument for obtaining photographs of the sun

  • photomicrographic camera

    A camera that is attached to a microscope, with the aim being to produce larger than life images.

  • photomicrography

    The use of photography to obtain a permanent record (a photomicrograph) of the image of an object as viewed through a microscope.

  • phototheodolite

    The phototheodolite, a combination camera and theodolite mounted on the same tripod, is used in terrestrial photogrammetry for mapmaking and other purposes.

  • phrenological head

    A representation of a human head, on which the phrenological faculties are illustrated. Phrenologists believed that one could tell personality traits by examining the bumps of the skull. The practice is now regarded as a pseudo-science.

  • phrenology

    The study of the bumps on the outside of the skull in order to determine a person's character. It was based on the mistaken theory that the skull becomes modified according to the size of different parts of the brain.

  • physical anthropology

    The study of humans, mainly their biological and physical make-up as well as their evolutionary history.

  • physician

    In the UK, a specialist in internal medicine, in the USA, the title refers to a general medical doctor.

  • physiognomy

    The study and interpretation of facial features to find the qualities of mind or character. It is based on the belief that an individual’s physical characteristics reflected their personality, an idea now rejected within medicine.

  • physiology

    The science of the functioning of living organisms and their component parts.

  • physiotherapy

    Exercise helpful to those with physical illness, for example stroke, or back injuries. A physical therapist is a specialist trained in using exercise and physical activities to condition and improve muscles.

  • piece mould

    Mould for casting that are made in two or more pieces, sometimes to be used more than once.

  • piles

    Swellings that develop from three pads or cushions of tissue that line the anal canal.

  • pill box

    A small box for pills

  • pill cutter

    used to prepare pills

  • pill mould

    used to make pills and tablets

  • pill tile

    Tile used to roll and divide pills on - this helped determine the dosage of the pill.

  • pilot balloon

    A meteorological balloon, which doesn’t carry instrumentation. Small balloons are used to determine the cloud base height. Larger balloons - reaching 15 km altitudes - are used to establish the direction and rate of upper-level winds, by tracking their ascent with a theodolite.

  • pince-nez

    A type of spectacle that rests solely on the nose. Translates from French as nose-pinch

  • pincers

    Joined tools with a pair of jaws and handles; used to grip objects. MEANS.

  • pipette

    A graduated tube (marked in ml) used to transport a definite volume of a gas or liquid in laboratory work.

  • pistol

    Short firearms, either rifled or smoothbore, with the chamber made as an integral part of the barrel, designed for use with one hand.

  • piston

    The disc-shaped or cylindrical assembly that, from or against pressure, moves back and forth inside the cylinders of a steam locomotive.

  • piston valve

    An inside or outside admission steam distribution valve with two piston heads spaced on a spindle and fitted with rings to maintain steam tightness.

  • pit saw

    Large two-man saws used to saw boards from the lengths of logs which are placed over big pits. The saws are operated by one man standing on the log and the other standing in the pit.

  • place mat

    Small table mats on which individual place settings are laid.

  • placenta

    The placenta is an organ, rooted to the lining of the womb, which links an unborn baby's blood supply to the mother’s. By linking to the mother's blood supply, the placenta carries out functions that the unborn baby cannot.

  • plague

    An acute contagious fever with high levels of mortality. Both the 'Black Death' that swept Europe in the 1340s and the Great Plague of London in 1665 are believed to have been bubonic plague.

  • plane -tool

    Tool used for leveling and smoothing the surface of wood by paring shavings from it.

  • planetarium projector

    A type of projector used to project images of celestial objects onto the dome inside a building or structure normally referred to as a planetarium.

  • planimeter

    Device for measuring the area of any plane surface by tracing the boundary of the area.

  • plaque

    An ornamental tablet of metal, porcelain etc that depicts a person, scene or inscription. Often fixed to a building in commemoration of a person or notable historical occurence.

  • plasma

    The liquid component of blood, in which the blood cells are suspended. Plasma makes up around 55 per cent of blood's total volume.

  • plaster

    A term that refers to a variety of protective coverings or dressings.

  • plastic surgery

    A surgical speciality dealing with the restoration or construction of the body. Often used to refer to elective surgery done for aesthetic reasons.

  • plate

    A shallow vessel usually circular and of earthenware or china from which food is eaten or served.

  • plate camera

    A camera designed to take glass plate negatives

  • platelayers trolley

    A lightweight railway vehicle for the use of track maintenance staff. May be pushed by hand, manually propelled through a lever and crank system or self-propelled by an internal conmbustion engine.

  • platform barrow

    A wheeled hand cart for transporting luggage, goods and equipment along station platforms.

  • platform bench

    A seat provided on the platform for the use of travellers.

  • platform indicator

    An electrical indicator denoting the occupation of a platform line in a station.

  • platform notice

    A sign or notice used to provide information or warnings on railway platforms.

  • platform scales

    Scale in which the balance pan for loads is a platform mounted on a balanced beam or series of levers; usually used for heavy goods, often in bulk.

  • platform sign

    Any information sign or warning notice situated on a station platform.

  • platform ticket machine

    A free-standing, or wall-mounted, coin operated machine for the unattended sale of platform tickets.

  • playing card

    Cards made in sets of a designated number and marked for use as game accessories during play. The markings or designs may follow a standard suit or rank system or may be special and individualized.

  • playing cards

    Cards made in sets of a designated number and marked for use as game accessories during play; the markings or designs may follow a standard suit or rank system or may be special and individualized.

  • plethysmograph

    An instrument for recording and measuring variations in the volume of organs or parts of the body. This is often caused by changes in blood pressure.

  • pleura

    The membranes covering the lungs and the inner cavity

  • pleurisy

    A condition caused by the inflammation of the pleura (the linings between the lungs and the ribcage). Symptoms include fever, chest pain and discomfort.

  • pleximeter

    A small, hard, elastic plate, made of ivory, bone, or rubber, placed in contact with body to receive a blow from a hammer or percussor.

  • pliers

    Pincerlike hand tools with scissors action, usually with serrated jaws; used for gripping, holding, bending, and cutting. DAC.

  • plug tap - cutting tool

    Cylinder-shaped tap used for cutting internal screw threads.

  • pneumonia

    Inflammation of the lungs caused by bacteria. The air sacs (alveoli) become filled with inflammatory cells and the lungs eventually become solid.

  • pocket sextant

    Minature form of sextant designed to fit in pocket when carried - includes box sextant.

  • pocket watch

    Watches meant to be carried in pockets, as opposed, for example to be worn on the wrist or carried on chains.

  • poems

    Written or oral compositions characterized by condensed language chosen for sound and suggestive power as well as meaning, and by the use of such literary techniques as structured meter, natural cadences, rhyme, or metaphor. AHD.

  • poison

    Any agent which, when introduced into the animal organism, is capable of producing a morbid, noxious, or deadly effect upon it. poisons are usually defined seperately from toxins or venoms as substances which are absorbed through epithelial linings such as the skin or gut.

  • poison cup

    Cup used to detect poisons by sampling and mixing with other materials.

  • poles

    Use for timber formed into long, cylindrical sections, the approximate diameter at breast height being one foot or less.

  • polio

    An infectious disease affecting the central nervous system. Affected individuals can exhibit a range of symptoms if the polio virus enters the blood stream.

  • polish

    A preparation used in polishing

  • polygraph

    a machine designed to detect and record changes in physiological characteristics, such as a person's pulse and breathing rates, used especially as a lie detector.

  • polyrama panoptique

    The polyrama panoptique was an optical toy popular from the 1820s through to the 1850s. The box shaped device held an illustration card which was illuminated and could be viewed by the user, through a lens.

  • pomander

    Small containers for fragrant spices or perfumes. A pomander was originally carried in the belief that it kept infection away.

  • porringer

    A small bowl with one or two handles, usually made of silver or pewter and most commonly used for eating greul or porridge. Popular in England and America from the 17th to the 19th centuries.

  • portrait

    A portrait is a painting, photograph, sculpture, or other artistic representation of a person, in which the face and its expression is predominant. The intent is to display the likeness, personality, and even the mood of the person.

  • posset pot

    A vessel for posset (hot milk curdled with ale or wine and seasoned with spices). Made in England in the 1700s and 1800s out of stoneware, tin-glazed earthenware, or glass.

  • post box

    Physical box for public and private use, used to collect outgoing mail

  • post mortem

    A medical procedure that consists of an examination to discover the cause and manner of a death.

  • postal scales

    A range of scales, of various designs, for weighing and hence determining the rate of postage for letters.

  • postcard

    Card on which a message may be written or printed for posting without an envelope, usually at a lower rate than that for letters in envelopes.

  • postcards

    Cards on which a message may be written or printed for mailing without an envelope, usually at a lower rate than that for letters in envelopes.

  • poster

    Notice, usually printed on paper, intended to be posted to advertise, promote, or publicise an activity, cause, product, or service; also, decorative, mass-produced prints intended for hanging.

  • posters

    Notices intended to be posted to advertise, promote, or publicize an activity, cause, product, or service; also, decorative, mass-produced prints intended for hanging. For small printed notices or advertisements intended for distribution by hand, use "handbills."

  • post-traumatic stress disorder

    PTSD can start after any traumatic event causing nightmares, flashbacks, headaches and an inability to relax. PTSD has debilitating and even fatal consequences including depression, aggression and suicide.

  • pot - container

    Cylindrical or rounded container, often of metal or earthenware, of varying size; used chiefly for domestic purposes.

  • pot lid

    Cover which is usually hinged or otherwise attached to a container.

  • poultice

    A soft moist mass that is spread on cloth and applied over the skin to treat an aching or inflamed part of the body.

  • pounce box

    A small box with a perforated top, formerly used to sprinkle sand or pounce on writing paper to dry the ink of a letter.

  • power car

    trial term

  • pram

    a wheeled carriage for a baby, pushed by a person on foot.

  • praxinoscope

    Animation device, a successor to the zoetrope, was invented in France in 1877 by Charles-Émile Reynaud. It consists of series of pictures inside a shallow drum with the same number of slits and matching mirrors mounted in the centre. As the cylinder rotates around the stationary mirrors the quick succession of reflected pictures gives the illusion of a moving picture.

  • prayer board

    A board placed on a wall in a religious place of worship. Prayers are written down and submitted by members of the church.

  • prayer flag

    (especially in Tibetan Buddhism) a flag on which prayers are inscribed.

  • prayer wheel

    Cylindrical box often wooden, usually vertically mounted with external inscription or containing a mantra script. Used as an aid to meditation, with each revolution of the box being equal to the reciting of the religious text. Used in Buddism and common in Tibet.

  • pre and post natal detector

    Diagnostic instrument designed by Michele Clements to detect pre and post natal hearing and limb movements, heart rates and breathing rates in newborns

  • pregnancy

    The condition of having a developing unborn embryo or foetus in the body. A human pregnancy is usually of 40 weeks gestation.

  • premature birth

    The birth of a baby before 37 weeks (259 days) of pregnancy.

  • prenatal screening

    Tests carried out to estimate whether a foetus is developing typically or shows signs of a possible medical condition.

  • press camera

    Versatile collapsible medium to large format folding cameras with three finders: optical viewfinder, rangefinder and sportsfinder.

  • press releases

    Official or authoritative statements giving information for publication in newspapers or periodicals. GAHLM.

  • price list

    Statement or list of the prevailing prices of merchandise, stock, or other items for sale.

  • print

    Pictorial works produced by transferring images by means of a matrix such as a plate, block, or screen, using any of various printing processes. When emphasizing the individual printed image, use "impressions." Avoid the controversial expression "original prints," except in reference to discussions of the expression's use.

  • printer

    Output device that convertS coded information from the processor into a readable form on paper

  • printing block

    Blocks, usually of wood, that either are cut to print an image, whether on paper, fabric, or other material, or that support other materials that form the actual printing surface.

  • prints

    Pictorial works produced by transferring images by means of a matrix such as a plate, block, or screen, using any of various printing processes. When emphasizing the individual printed image, use "impressions." Avoid the controversial expression "original prints," except in reference to discussions of the expression's use. If prints are neither "reproductive prints" nor "popular prints," use just "prints." With regard to photographs, use "photographic prints"; for types of reproductions of technical drawings and documents, use terms found under "<reprographic copies>."

  • prism - optical

    Transparentt triangular bar made of glass, plastic or other materials, used to refract (bend) light in optical instruments to produce a spectrum for demonstration or for spectral analysis.

  • prism - optical demonstration

    Demonstration using 60º prism, usually on a stand, show the colour spectrum from white light

  • prismatic compass

    A type of surveying compass fitted with sights - often folding - and a moveable prism to directly read the bearing on compass card whilst taking a bearing through the sights.

  • prize medal

    medal awarded to commemorate an achievement.

  • probang

    A long, slender, flexible rod having a tuft or sponge at the end, used to remove foreign bodies from or apply medication to the larynx or asophagus

  • probe

    medical tool used during diagnostic process

  • profile gauge

    A profile gauge resembles a comb, but with steel teeth that are set tightly against one another. When pressed against an object they will conform to the shape of that object's profile - hence 'profile gauge'

  • profound hypothermia unit

    An instrument used during heart surgery to induce hypothermia and slow down the beating of the heart

  • profound mental retardation

    A level of mental retardation or mental disorder associated with an IQ below 20.

  • programme

    Brief outlines or explanations of the order to be pursued, criteria for participation, or the subjects embraced in a given event or endeavor. Includes lists of the features composing a dramatic or other performance, with the names of participants.

  • projection microscope

    Optical microscope that produces a magnified projected image that is viewed either through a glass screen or projected onto an opaque surface using natural or artificial light

  • projector

    A device for projecting a beam of light; for projecting an image onto a screen

  • prolapse

    The falling down or sinking, of a part. To fall out of place.

  • proof sheet

    Refers in a general way to impressions of a print taken from a plate or block, usually before the production of the regular edition, in order to correct, add to, or check the development of a work. Formerly, true proofs referred to proofs made before work on the plate or block is finished. Common since the 18th century are proofs before letters, artist's proofs, remarque proofs, and printers' proofs; these are types of proofs that are deliberately printed to be sold at higher prices and are not, in the strictest sense, true proofs.

  • propeller

    Revolving shafts with radiating blades used to propel craft through air or water

  • prospectus

    A railway company promoters' first formal document outlining the purpose and benefits of the proposed railway. Its purpose was to attract investment.

  • prostheses

    Artificial body parts, or materials inserted into tissue for functional, cosmetic, or therapeutic effect. Prostheses can be functional (artificial arms and legs), or cosmetic (artificial eye).

  • prosthetic appliance

    used to replace hands

  • prosthetic leg

    A device, either external or implanted, that substitutes for or supplements a missing or defective part of the body.

  • protection

    The act or instance of warding off a threat, or preserves somone or something from injury or harm.

  • protective spectacles

    Type spectacle with strenghened glass or other transparent medium to protect against flying particles, but not providing correction for defective vision.

  • protein

    Proteins are large organic compounds made of amino acids. They are essential to all living cells and organisms.

  • prototype - object genre

    Original form of an object, which is used as an example. Whenever a new design for a building or machine is being developed, a prototype will be made. The prototype is often a smaller version of the final product.

  • prototype locomotive

    A locomotive which is the first of a new type, where other examples might be expected to follow successful trials.

  • protractor

    A mathematical instrument for laying down and measuring angles on paper

  • protractors

    Devices used for plotting or measuring angles, often designed as graduated arcs.

  • psychiatric hospital

    Psychiatric hospital specialising in the treatment of serious mental illness, usually for relatively long-term patients.

  • psychiatry

    A branch of medicine concerned with the diagnosis, treatment and prevention of mental illness.

  • psychotropic drug

    A term used to describe drugs that affect mood and the mind.

  • psychotropic drugs

    describing drugs that affect mood and the mind

  • public notice

    A form of information directed to citizens of a governmental body regarding government-related activities. Public notices have traditionally been published in specified governmental publications and in local newspapers, a common source for community information.

  • public timetable

    A document showing the publicly advertised times of train departures and arrivals at stations en route (cf. the Working Timetable).

  • puerperal fever

    A blood infection suffered by some mothers soon after birth. The main symptom is a fever in the first 24 hours following delivery.

  • pulleys

    Wheels having grooved rims for carrying a rope or other line and turning in a frame. DAC.

  • pulmonary tuberculosis

    A deadly airborne disease which attacks the lungs.

  • pulse

    The throbbing of the arteries as blood flows through them. The pulse matches the rate at which the heart is beating.

  • pulse glass

    An instrument consisting of a glass tube with terminal bulbs, containing ether or alcohol, which the heat of the hand causes to boil - so called from the pulsating motion of the liquid when thus warmed. Using a pulse glass in an experiment demonstrates Charles' law, that the volume of a given amount of dry ideal gas is directly proportional to the temperature if the amount of gas and the pressure remains fixed.

  • pump - machinery

    A device or machine that can compress and transport fluids or gases by pressure, suction, or both.

  • punch - marking tool

    Tool that, by repeated sudden impact or by continuous pressure, is used to make pricks, indentations, or perforations in various materials. It is usually in the form of a steel rod with an end that may take a variety of shapes used for marking, blanking, decoration, driving in nails, enlarging an existing hole, or cutting out pieces of a particular shape.

  • pustule

    A small inflammation of the skin, containing pus.

  • putrefaction

    The process of bacteria decomposing proteins, often leaving a strong and unpleasant smell.

  • puzzle

    Use for recreational artifacts designed as amusements or diversions by presenting constructional difficulties to be solved by ingenuity or patient effort

  • puzzles

    Use for recreational artifacts designed as amusements or diversions by presenting constructional difficulties to be solved by ingenuity or patient effort. For word or number diversions to be solved, see under "<word and number puzzles and games>." RHDEL2.

  • pyrometers

    Instruments for measuring high temperatures by measuring the radiation emitted by hot objects. RHDEL2.

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