| SDT | sensory detection theory; right sacrotransverse [fetal position] [Lat. sacrodextra transversa]; sign... |
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| DOI | date of injury; died of injuries; diffusion of innovations [theory] |
| MAUT | multi-attribute utility theory |
| theor | theory, theoretical |
| TSD | target-skin distance; Tay-Sachs disease; theory of signal detectability |
| DFT | Density Functional Theory |
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| IRT | Item Response Theory |
| SDT | Signal Detection Theory |
| TOM | Theory of Mind |
| TPB | Theory of Planned Behavior |
| C sliding osteotomy | An extraoral osteotomy in the shape of a "C" performed bilaterally in the mandibular rami for the correction of retrognathia and/or apertognathia. (05 Mar 2000) |
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| sliding | 1. That slides or slips; gliding; moving smoothly. 2. Slippery; elusory. "That sliding science hath me made so bare." (Chaucer) Sliding friction, the timber guides used in launching a vessel. Source: Websters Dictionary (01 Mar 1998) |
| sliding filament hypothesis | The theory that the contracting muscle shortens because two sets of filaments slide past each other. (05 Mar 2000) |
| sliding filament model | <cell biology> Generally accepted model for the way in which contraction occurs in the sarcomere of striated muscle, by the sliding of the thick filaments relative to the thin filaments. (18 Nov 1997) |
| sliding flap | A rectangular flap raised in an elastic area, with its free end adjacent to a defect; the defect is covered by stretching the flap longitudinally until the end comes over it. Synonym: advancement flap, French flap. (05 Mar 2000) |
| sliding hernia | A hernia in which an abdominal viscus forms part of the sac. Synonym: extrasaccular hernia, parasaccular hernia, slipped hernia. (05 Mar 2000) |
| sliding hiatal hernia | <radiology> Axial hernia, concentric hernia, 99% of hiatal hernias, portion of peritoneal sac forms part of wall of hernia, aetiology: rupture of phrenicoesophageal membrane due to repetitive stretching with swallowing, incidence: increases with age Findings: UGI, epiphrenic bulge, distance between B ring and hiatal margin greater than 2cm, tortuous oesophagus, gastroesophageal reflux, greater than 6 thick gastric folds within suprahiatal pouch, CT, dehiscence of diaphragmtic crura greater than 15 mm, pseudomass within/above distal oesophagus, fat (omemtum) surrounding distal oesophagus (12 Dec 1998) |
| sliding hook | A movable attachment used on an orthodontic wire for the application of elastic traction or headgear force. (05 Mar 2000) |
| sliding oblique osteotomy | An oral surgical procedure in which the mandibular ramus is cut vertically from the sigmoid notch to the angle to facilitate posterior repositioning of the mandible in correction of mandibular prognathism; it may be performed extraorally or intraorally, and is similar to vertical osteotomy. (05 Mar 2000) |
| sliding oesophageal hiatal hernia | Displacement of the cardioesophageal junction and the stomach through the oesophageal hiatus. (05 Mar 2000) |
| Abbe theory of image formation | <optics, physics> Abbe's theory is based on the fact that a non-self-luminous particle, which is illuminated by an extraneous source, gives rise to diffracted light rays, in addition to the dioptric pencil. He stated that to form a good microscopical image as many of the diffracted rays as possible should be intercepted by the objective. With closely ruled lines, his theory is easily demonstrated by observing the back lens of the objective, for here the diffracted rays can be observed directly if the aperture diaphragm is closed. It can be shown that, when the illumination is arranged to exclude the diffracted images, resolution is lost. (11 Mar 1998) |
| adsorption theory of narcosis | That a drug becomes concentrated at the surface of the cell as a result of adsorption, and thus alters permeability and metabolism. (05 Mar 2000) |
| Altmann's theory | A theory that protoplasm consists of granular particles (called bioblasts) that are clustered and enclosed in indifferent matter. (05 Mar 2000) |
| Arrhenius-Madsen theory | That the reaction of an antigen with its antibody is a reversible reaction, the equilibrium being determined according to the law of mass action by the concentrations of the reacting substances. (05 Mar 2000) |
| atomic theory | That chemical compounds are formed by the union of atoms in certain definite proportions; in its modern form, first advanced in 1803 by John Dalton. (05 Mar 2000) |
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