| SIg, sIg | surface immunoglobulin |
|---|---|
| s | Greek lower case letter sigma; conductivity; cross section; millisecond; molecular type or bond; pop... |
| SIP | Sickness Impact Profile; slow inhibitory potential; surface inductive plethysmography |
| SmIg | surface membrane immunoglobulin |
| S-MUAP | surface-detected motor unit action potential |
| smooth surface caries | Caries initiated on the smooth surfaces of teeth. (05 Mar 2000) |
|---|---|
| soil surface | The upper limits of the soil profile, for mineral soils, the upper limits of the highest mineral horizon (A-horizon), for organic soils, the upper limit of undecomposed organic matter. (09 Oct 1997) |
| SP220K cell surface matrix proteinase | <enzyme> Inactive form has guanidinobenzoatase activity; active form has gelatinolytic activity Registry number: EC 3.4.21.- Synonym: sp220k enzyme (26 Jun 1999) |
| nasal surface of maxilla | The surface of the maxilla that forms part of the lateral nasal wall with a large defect (maxillary hiatus) posteriorly and the lacrimal sulcus in its midportion. Synonym: facies nasalis maxillae. (05 Mar 2000) |
| nasal surface of palatine bone | The nasal surface of the perpendicular lamina of the palatine bone that forms part of the lateral wall of the nasal cavity, the nasal surface of the horizontal lamina of the palatine bone that forms part of the floor of the nasal cavity. Synonym: facies nasalis ossis palatini. (05 Mar 2000) |
| sternocostal surface of heart | The anterior aspect of the heart, formed mostly by the right ventricle and to a lesser extent the left ventricle. Synonym: facies sternocostalis cordis. (05 Mar 2000) |
| subocclusal surface | A portion of the occlusal surface of a tooth which is below the level of the occluding portion of the tooth. (05 Mar 2000) |
| superior part of diaphragmatic surface of liver | The convex superior portion of the diaphragmatic surface of the liver. Synonym: pars superior faciei diaphragmaticae hepatis. (05 Mar 2000) |
| superior surface of cerebellar hemisphere | It lies against the under surface of the tentorium and includes the ala lobuli centralis, quadrangular lobule, simple lobule, and superior semilunar lobule. Synonym: facies superior hemispherii cerebelli. (05 Mar 2000) |
| superolateral cerebral surface | The aspect of the cerebral hemisphere that lies in contact with the flat bones of the skull; it includes parts of the frontal, parietal, temporal, and occipital lobes. Synonym: facies superolateralis cerebri, cortical convexity, superolateral cerebral surface. (05 Mar 2000) |
| superolateral surface of cerebrum | The aspect of the cerebral hemisphere that lies in contact with the flat bones of the skull; it includes parts of the frontal, parietal, temporal, and occipital lobes. Synonym: facies superolateralis cerebri, cortical convexity, superolateral cerebral surface. (05 Mar 2000) |
| surface | 1. The exterior part of anything that has length and breadth; one of the limits that bound a solid, especially. The upper face; superficies; the outside; as, the surface of the earth; the surface of a diamond; the surface of the body. "The bright surface of this ethereous mold." (Milton) 2. Hence, outward or external appearance. "Vain and weak understandings, which penetrate no deeper than the surface." (V. Knox) 3. <geometry> A magnitude that has length and breadth without thickness; superficies; as, a plane surface; a spherical surface. 4. That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion. Caustic surface, Heating surface, etc. See Caustic, Heating, etc. Surface condensation, Surface condenser. See Condensation, and Condenser. Surface gauge, a plate having an accurately dressed flat surface, used as a standard of flatness by which to test other surfaces. Surface printing, printing from a surface in relief, as from type, in distinction from plate printing, in which the ink is contained in engraved lines. Origin: F. See Sur-, and Face, and cf. Superficial. Source: Websters Dictionary (01 Mar 1998) |
| surface-active | Indicating the property of certain agents of altering the physicochemical nature of surfaces and interfaces, bringing about lowering of interfacial tension; they usually possess both lipophilic and hydrophilic groups. See: surfactant. (05 Mar 2000) |
| surface-active agent | Agents that modify interfacial tension of water; usually substances that have one lipophilic and one hydrophilic group in the molecule; includes soaps, detergents, emulsifiers, dispersing and wetting agents, and several groups of antiseptics. (12 Dec 1998) |
| surface active compound | <biochemistry> Usually, in biological systems, means a detergent like molecule that is amphipathic and that will bind to the plasma membrane or to a surface with which cells come in contact, altering its properties from hydrophobic to hydrophilic or vice versa. (18 Nov 1997) |