| scandium | <chemistry> A rare metallic element of the boron group, whose existence was predicated under the provisional name ekaboron by means of the periodic law, and subsequently discovered by spectrum analysis in certain rare Scandinavian minerals (euxenite and gadolinite). It has not yet been isolated. Symbol Sc. Atomic weight 44 Origin: NL. So called because found in Scandinavian minerals. Source: Websters Dictionary (01 Mar 1998) |
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| scanner | A device or instrument that scans. (05 Mar 2000) |
| scanning | The act of imaging by traversing with an active or passive sensing device, often identified by the technology or device employed. (05 Mar 2000) |
| scanning electron microscope | <instrument> An electron microscope in which the image is formed by a beam synchronised with an electron probe scanning the object. The intensity of the image forming beam is proportional to the scattering or secondary emission of the specimen where the probe strikes it (05 Aug 1998) |
| scanning electron microscopy | <procedure> Technique of electron microscopy in which the specimen is coated with heavy metal and then scanned by an electron beam. The image is built up on a monitor screen (in the same way as the raster builds a conventional television image). The resolution is not so great as with transmission electron microscopy, but preparation is easier (often by fixation followed by critical point drying), the depth of focus is relatively enormous, the surface of a specimen can be seen (though not the interior unless the specimen is cracked open) and the image is aesthetically pleasing. (18 Nov 1997) |
| scanning equalization radiography | An electronically enhanced method of radiography in which a small X-ray beam is scanned over the patient while its attenuation is measured, providing feedback to modulate beam intensity in order to equalise average X-ray film exposure. (05 Mar 2000) |
| Scanning Probe Microscopy | <technique> Initially called Atomic Force Microscopy, this technique is now more typically termed Scanning Force Microscopy or Scanning Probe Microscopy. This instrument is essentially an extremely high resolution profilometre. A sharp tip, typically fabricated from silicon nitride, is scanned across the surface of a sample at a constant force by three piezoelectric ceramics. The piezoelectric ceramics are computer controlled via a feedback loop which monitors the position of the tip by means of an optical lever. (A laser is focused on the top of the tip support and the beam reflected into a position sensitive detector). The changes in height of the tip are used to form an image as the tip is scanned across the sample. Acronym: SPM (26 Mar 1998) |
| scanning speech | Measured or metered, often slow speech. (05 Mar 2000) |
| scanning transmission electron microscopy | <procedure> Method of electron microscopy in which image formation depends upon analysis of the pattern of energies of electrons that pass through the specimen. Has comparable resolving power to conventional transmission EM. (18 Nov 1997) |
| scanning tunnelling microscopy | <procedure> A form of ultra high resolution microscopy of a surface in which a very small current is passed through a surface and is detected by a microprobe of atomic dimnensions at its tip that scans the surface by use of a piezodrive. In the simplest form the current transferred to the probe is recorded as an indication of the contours of molecules on the surface above the local plane. In more complex forms feedback is used to hold the probe at a constant difference and the signal in the feedback loop indicates the contours of the molecule. Capable of resolving single atoms and known to work for nonconducting molecules as well as conducting ones. (18 Nov 1997) |
| scanogram | A radiographic technique for showing true dimensions by moving a narrow orthogonal beam of X-rays along the length of the structure being measured, e.g., the lower extremities. Origin: scan-+ G. Gramma, something written (05 Mar 2000) |
| scans | Imaging of body tissue, usually using radioactive substances. (16 Dec 1997) |
| scansores | <ornithology> An artifical group of birds formerly regarded as an order. They are distributed among several orders by modern ornithologists. The toes are in pairs, two before and two behind, by which they are enabled to cling to, and climb upon, trees, as the woodpeckers, parrots, cuckoos, and trogons. Origin: L. Scandere, scansum, to climb. (11 Mar 1998) |
| scansorial | <zoology> Capable of climbing; as, the woodpecker is a scansorial bird; adapted for climbing; as, the scansorial foot. Of or pertaining to the Scansores. <zoology> Scansorial tail, a tail in which the feathers are stiff and sharp at the tip, as in the woodpeckers. Source: Websters Dictionary (01 Mar 1998) |
| scant | 1. Not full, large, or plentiful; scarcely sufficient; less than is wanted for the purpose; scanty; meager; not enough; as, a scant allowance of provisions or water; a scant pattern of cloth for a garment. "His sermon was scant, in all, a quarter of an hour." (Ridley) 2. Sparing; parsimonious; chary. "Be somewhat scanter of your maiden presence." (Shak) Synonym: See Scanty. Origin: Icel. Skamt, neuter of skamr, skammr, short; cf. Skamta to dole out, to portion. 1. To limit; to straiten; to treat illiberally; to stint; as, to scant one in provisions; to scant ourselves in the use of necessaries. "Where man hath a great living laid together and where he is scanted." (Bacon) "I am scanted in the pleasure of dwelling on your actions." (Dryden) 2. To cut short; to make small, narrow, or scanty; to curtail. "Scant not my cups." Origin: Scanted; Scanting. Source: Websters Dictionary (01 Mar 1998) |
| scattering |
the physical process in which particles are deflected haphazardly as a result of collisions a small number (of something) dispersed haphazardly; "the first scatterings of green"; "a sprinkling of grey at his temples" a light shower that falls in some locations and not others nearby dispersion: spreading widely or driving off scatter: the act of scattering diffusing(a): spreading by diffusion
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| scapula |
either of two flat triangular bones one on each side of the shoulder in human beings
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| scapular |
a feather covering the shoulder of a bird garment consisting of a long wide piece of woolen cloth worn over the shoulders with an opening for the head; part of a monastic habit relating to or near the shoulder blade
출처: wordnet.princeton.edu/perl/webwn
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| scapulary |
scapular: garment consisting of a long wide piece of woolen cloth worn over the shoulders with an opening for the head; part of a monastic habit
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| scapulohumeral |
relating to the shoulder blade and upper arm bone
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| SCA | of or relating to any of the scalene muscles |
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| SCA | (mathematics) of a triangle having three sides of different lengths |
| SCA | any of four pairs of muscles extending from the cervical vertebrae to the second rib |
| SCA | a triangle with no two sides of equal length |
| SCA | any of four pairs of muscles extending from the cervical vertebrae to the second rib |
| SCA | discomfort and vascular symptoms and loss of sensation in a shoulder and arm |
| SCA | an electronic pulse counter used to count pulses that occur too rapidly to be recorded individually |
| SCA | (zoology) having the body covered or partially covered with thin horny plates, as some fish and reptiles |
| SCA | of or related to a musical scale |
| SCA | ascent by or as if by a ladder |
| SCA | act of measuring or arranging or adjusting according to a scale |
| SCA | the act of arranging in a graduated series |