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Glossary

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S

  • spa

    A resort with mineral springs which are thought to have properties that help cure or soothe illnesses.

  • space probes

    Unmanned spacecraft designed for nonorbital missions, such as flights to other planets or into deep space; for unmanned spacecraft designed for orbital missions, use "artificial satellites."

  • spacecraft

    Use for manned or unmanned vehicles designed to be placed in orbit about the earth or into a trajectory toward another celestial body. NASATH.

  • spade

    A long handled digging tool with rectangular metal blade.

  • spandrel

    The triangular space between the outer curve of an arch and the rectangle formed by the mouldings enclosing it, frequently filled in with ornamental work. In railway usage often refers to the ornate ironwork forming the spandrels of station canopy supports.

  • spanner

    Hand tools consisting of a handle and a jaw at one end; used to turn or hold a bolt, nut, pipe, or fitting. The jaw may be shaped for a specific-sized object or may be adjustable.

  • specific fever

    Produced by a peculiar poison, or an exclusive or specific cause, and the fever runs, or strongly tends to run, to a definite course which can be used to identify the fever; an example is yellow fever

  • specifications

    Detailed and exact statements of particulars, especially statements prescribing materials, dimensions, and workmanship for something to be built, installed, or manufactured. AHD.

  • specimen

    Individual sample or unit that is deliberately selected for examination, display, or study, and is usually chosen as typical of its kind.

  • specimen container

    Container used to transport specimens from patients to the laboratory, often a urine sample.

  • spectacle case

    case for spectacles

  • spectacle frame

    framework part of spectacles, devices to compensate for defective vision or to protect the eyes from light, dust, and the like, consisting usually of two lenses set in a frame that includes a nosepiece for resting on the bridge of the nose and which may also have two sidepieces extending over or around the ears.

  • spectacles

    Pair of eyeglasses to compensate for defective vision or to protect the eyes from light, dust, and the like. Kept in place by sidepieces passing over the ears, on the nose or held in the hand.

  • spectrophotometer

    Type of photometer that measures the intensity of infrared, visible or ultraviolet light against colour or specifically against wavelength. They are furtyer classified by the the measurement techniques used, how the spectrum is produced & the range of source intensity they can measure.

  • spectrophotometer - ultraviolet

    Type of photometer that measures the intensity of ultraviolet light against colour or specifically against wavelength. They are furtyer classified by the the measurement techniques used, how the spectrum is produced & the range of source intensity they can measure.

  • spectrophotometer - visible light

    Type of photometer that measures the intensity of light against colour or specifically against wavelength. They are classified by the wavelength of operation, the measurement techniques used, how the spectrum is produced & the range of source intensity they can measure.

  • spectroscope

    Optical instrument that disperses visible light into a spectrum using prisms or gratings, which can be observed and analysed. Used mainly in astronomy and chemistry, variants include spectrographs that record spectra & spectrometers that have scale for direct wavelength measurement

  • spectroscope component

    Any component part of a spectroscope or spectrograph, includes optical components and mechanical parts.

  • spectroscopy

    Branch of optics dealing with the measurement of the wavelength and intensity of a spectrum.

  • speculum

    Instrument for dilating certain passages of the body, and throwing light within them, thus facilitating examination or surgical operations; Types incluse ear, nasal, vaginal, anal or rectal

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