The organ of hearing; the external ear
worn to prevent and correct 'outstanding' ears
A funnel-shaped instrument for people with hearing difficulties. The trumpet is designed to gather sound waves and direct them into the ear canal. The short end of the funnel was held to the ear by the user, and the large end directed toward the sound.
Pottery made of clay which is fired at a relatively low temperature. Earthenware is often semi-porous, meaning some liquid or air can pass through it. This can be altered by treating the pottery with a glaze.
Type of hand held or spectacle-like solar filter, with metalised film or similar on glass or plastic subrate used to view the Sun with the naked eye during the partial phases of a solar eclipse.
An instrument used to cut the base of a tumor during surgery. An obsolete term for a snare, especially one of enough strength to cut through the base or pedicle of a tumour.
A common skin disease where the skin becomes inflamed, it is characterized by itching and bleeding.
A standardised, rectangular, pre-printed cardboard ticket, originally invented by Thomas Edmondson together with his patent ticket-printing, and ticket-dating presses in about 1848.
Toy with an educational or teaching component.
Sculptured representation of the deceased on a tomb.
Small, usually semi-ovoid cups with an often stemmed base, made in a variety of materials and used for serving individual boiled eggs in the shell.
A complicated version of a pantograph, designed by William Wallace in 1831.
Part of a steam locomotive which, by means of a continuous jet of steam, creates the vacuum for keeping the brakes released.
Non-essential surgery performed by choice and often used to improve ‘quality of life’.
A locomotive which is powered by electricity from external or internal source.
Mechanisms for making, breaking, or changing connections in electrical circuits.
electric traction performance recorder
Any effect resulting from the existence of stationary or moving electric charges.
used to record the electrical activity of the heart
electroencephalography ( EEG, is a neurological test that uses an electronic monitoring device to measure and record electrical activity in the brain) with the electrodes applied directly to the cerebral cortex.
A conductor which enables a current to go in or out of a particular object, substance or region.
A locomotive that can operate with either electric or diesel power.
Magnet constructed from a soft iron core around which is wound a coil of wire. A magnetic field is generated when an electric current is passed through the wire.
Use of magnetism to produce an electromotive force (emf). If a bar magnet is pushed through a wire coil, an electric current is induced, in the coil, as long as the magnet is moving. By the same principle, an electric current is induced in the coil if it is rotated around the magnet,
An electron microscope uses a beam of electrons, instead of light, to produce highly magnified images of objects. As electrons have a much smaller wavelength than visible light, this allows a much higher resolution to be achieved
The process of separating electrons in a solution by passing an electric current through it.
Branch of physiology that is concerned with the electric phenomena in living bodies.
mechanical device that produces static electricity, or electricity at high voltage and low continuous current.
The passing of electric currents through the body's tissues to stimulate the functioning of nerves and the muscles.
machine used to deliver therapeutic electric shocks to patients
Condition in which there is large swelling of the tissues due to blockage of lymph vessels. It is usually caused by parasitic worms.
The application of chemical preservatives to slow the natural decomposition of a corpse. Modern methods were greatly refined in the 1800s. Although they have been widely used in Europe, the custom remains most commonly used in North America. Formaldehyde is the primary embalming fluid used today. It is a preservative injected into the blood system to replace the blood which is drained out. Embalming fluid can also be pumped into the body cavities as well.
Producing raised letters or designs on a surface.
A machine which creates a three-dimensional image or design in paper or other ductile materials.
An animal or human at an early stage of development, before birth. In humans the term refers to an unborn child up to the eighth week of development.
A substance that causes vomiting.
an instrument to look at the internal parts of the body. The modern endoscope is a flexible, fibreglass instrument that can be swallowed by a patient or introduced through a tiny incision in the body.
Inhalation anaesthesia technique in which anaesthetic and respiratory gases pass through a tube placed in the trachea via the mouth or nose.
A flexible tube inserted nasally, orally, or through a tracheotomy into the trachea to provide an airway
A liquid injected into the anus. Enemas can be carried out for medical reasons, as a treatment for constipation, or as a way to give drugs.
A syringe for adminstering enemas
A technique to obtain prints from an engraved surface. Engraving is the practice of cutting into a hard, usually flat surface.
Rectangular, flat container made of flexible material that is folded to produce overlapping seams that are adhered together on two or three edges; often with a flag closure, and intended for small objects or documents.
One of a group of complex organic substances formed in the living cells of plants and animals. A catalyst for the chemical reactions of biological processes.
A sudden widespread occurance of an infection with high numbers of people affected.
The study of epidemic disease, including its spread, causes and methods of control.
A technique used in childbirth and gynaecological surgery. An anaesthetic is injected into the epidural space of the spinal cord, usually via a catheter. Sensation is lost in the abdominal, genital and pelvic areas as a result.
A disorder of brain function characterized by seizures that occur suddenly. The seizures can be triggered by fast flashing lights, especially strobe lighting.
Poisoning induced from too much medicinal ergot or eating grain infected by ergot (fungus). Symptoms include spasms, cramp and gangrene. Historically known as St Anthony’s fire because a pilgrimage to his tomb was said to cure the symptoms.
Short literary compositions on single subjects, often presenting the personal view of the author. AHD.
Print made from an etched printing plate, which is a metal plate on which a design is made by coating the plate with an acid-resistant substance, creating a design in the coating, and then exposing the plate to acid, which etches the plate where the metal is exposed. For designs incised directly into a copper plate using a burin or graver, use "engravings (prints)."
A volatile liquid (resulting from the action of sulphuric acid upon alcohol) formerly used as an anaesthetic. Ether was usually inhaled.
A glass instrument for measuring changes in volume of gases. The eudiometer is effective during and following chemical reactions. It often resembles a large upside-down test tube with a scale on the side.
The study of human improvement by selective breeding, founded in the 1800s by English scientist Sir Francis Galton. Widely discredited after its use by the Nazi regime.
Euthanasia is the action of directly causing the quick and painless death of a person with a terminal disease. It is illegal in most countries and is a controversial subject. In most cases it is performed as part of the patient's wishes.
A manifestation of magic, commonly regarded as a curse which may result in bad luck, illness or even death. It has a place in many different cultures.
trial term S&H
used to simulate the trotting of a horse, also known as a chamber horse
A surgical operation used to determine the cause of a patient's symptoms.
Type of light meter that measures the intensity of incident and reflected visible light and converts it into units that photographers use to adjust the aperture & shutter interval of camera
The organ of sight or vision. In man, and vertebrates generally, it is properly the movable ball or globe in the orbit, but the term often includes the adjacent parts.
A small glass or vessel for applying lotion to the eye. This is often necessary to sooth irritation.
Instrument to stimulate the action of the eye.
Equipment used for testing the eyesight of locomotive drivers. Typically a wooden block painted white and marked with black dots.
eyesight testing equipment
Medical equipment used on the railway. General equipment such as first aid boxes, stretchers, etc. that are not unique to railways may be included here but will not be listed as narrower terms in the thesaurus. Use a medical thesaurus for further guidance.