| stony | 1. Of or pertaining to stone, consisting of, or abounding in, stone or stones; resembling stone; hard; as, a stony tower; a stony cave; stony ground; a stony crust. 2. Converting into stone; petrifying; petrific. "The stony dart of senseless cold." (Spenser) 3. Inflexible; cruel; unrelenting; pitiless; obdurate; perverse; cold; morally hard; appearing as if petrified; as, a stony heart; a stony gaze. Stony coral. <zoology> Same as Stone coral, under Stone. Origin: AS. Stanig. See Stone. Source: Websters Dictionary (01 Mar 1998) |
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| stook | <agriculture> A small collection of sheaves set up in the field; a shock; in England, twelve sheaves. Origin: Scot. Stook, stouk; cf. LG. Stuke a heap, bundle, G. Stauche a truss, bundle of flax. <agriculture> To set up, as sheaves of grain, in stooks. Origin: Stooked; Stooking. Source: Websters Dictionary (01 Mar 1998) |
| Stookey, Byron | <person> U.S. Neurosurgeon, 1887-1966. See: Stookey-Scarff operation, Queckenstedt-Stookey test. (05 Mar 2000) |
| Stookey-Scarff operation | An operation to establish an opening from the third ventricle to the prechiasmal and interpeduncular cisterns (Stookey-Scarff operation) or from the third ventricle to the interpeduncular cistern (Dandy operation). (05 Mar 2000) |
| stool | <botany> A plant from which layers are propagated by bending its branches into the soil. Origin: L. Stolo. See Stolon. <agriculture> To ramfy; to tiller, as grain; to shoot out suckers. Source: Websters Dictionary (01 Mar 1998) |
| stool culture | A test used to identify pathogenic organisms in the stools that may be responsible for gastroenteritis. Often performed in cases of unexplained diarrhoea. May indicate bacterial, viral or parasitic disease. Cultures are also helpful in assisting the selection an appropriate antibiotic agent. See: Traveler's Diarrhoea. (27 Sep 1997) |
| stool guaiac test | <investigation> A chemical test measures the presence of fresh or decomposed blood. Blood may arise from bleeding anywhere along the gastrointestinal tract, from the mouth to the anus. An easy to perform colourmetric test. (27 Sep 1997) |
| stool smear | A microscopic slide preparation that is used to identify pathogenic micro-organisms within a stool specimen. (27 Sep 1997) |
| stool test | A test to see whether there is blood in the bowel movement. Also called a faecal occult blood test: a test to check for hidden blood in stool. (faecal refers to stool. Occult means hidden.) (12 Dec 1998) |
| stop | <dentistry> A bend or auxiliary attachment placed on a wire to limit the archwire from sliding or moving in the bracket slot of the bracket. (08 Jan 1998) |
| stop codon | <molecular biology> The three codons, UAA known as ochre, UAG as amber and UGA as opal, that do not code for an amino acid but act as signals for the termination of protein synthesis. They are not represented by any tRNA and termination is catalysed by protein release factors. There are two release factors in E. Coli, RF1 recognises UAA and UAG, RF2 recognises UAA and UGA. Eukaryotes have a single GTP requiring factor, eRF. See: ochre suppressor, amber suppressor. (13 Jan 1998) |
| stop-needle | A surgical needle, with the eye at the tip, the shank of which has a projecting shelf to arrest the needle when it has passed the desired distance through the tissues. (05 Mar 2000) |
| stop-speculum | A dilating speculum, as a speculum of the eyelids, which is provided with a catch to prevent its being opened too wide. (05 Mar 2000) |
| stope | <chemical> A horizontal working forming one of a series, the working faces of which present the appearance of a flight of steps. Origin: Cf. Step, &. <chemical> To excavate in the form of stopes. To fill in with rubbish, as a space from which the ore has been worked out. Origin: Stoped; Stoping. Source: Websters Dictionary (01 Mar 1998) |
| stoping | <chemical> The act of excavating in the form of stopes. Source: Websters Dictionary (01 Mar 1998) |