| Stannius | Herman F., German biologist, 1808-1883. See: Stannius ligature. (05 Mar 2000) |
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| Stannius ligature | A ligature placed either around the junction between the sinus venosus and atrium of the frog or turtle heart (first Stannius ligature) or around the atrioventricular junction (second Stannius ligature); demonstrates that the cardiac impulse is conducted from sinus venosus to atria to ventricle, but that successive chambers possess automaticity since each may continue to beat, but the atria now have a slower rate than the sinus venosus, and the ventricle either does not contract or beats at a slower rate than the atria. (05 Mar 2000) |
| stanno- | <chemistry, prefix> A combining form (also used adjectively) denoting relation to, or connection with, tin, or including tin as an ingredient. Origin: L. Stannum = tin. (29 Oct 1998) |
| stannofluoride | <chemistry> Any one of a series of double fluorides of tin (stannum) and some other element. Source: Websters Dictionary (01 Mar 1998) |
| stannoso- | <chemistry, prefix> A combining form (also used adjectively) denoting relation to, or connection with, certain stannnous compounds. (29 Oct 1998) |
| stannotype | <photography> A photograph taken upon a tin plate; a tintype. Source: Websters Dictionary (01 Mar 1998) |
| stannous | <chemistry> Pertaining to, or containing, tin; specifically, designating those compounds in which the element has a lower valence as contrasted with stannic compounds. Stannous chloride, a white crystalline substance, SnCl2.(H2O)2, obtained by dissolving tin in hydrochloric acid. It is used as a mordant in dyeing. Source: Websters Dictionary (01 Mar 1998) |
| stannous fluoride | A preparation containing not less than 71.2% of stannous tin and not less than 22.3% nor more than 25.5% of fluoride; used as a prophylactic against caries in dentistry. (05 Mar 2000) |
| stannum | <chemistry> The technical name of tin. See Tin. Origin: L, alloy of silver and lead; later, tin. Source: Websters Dictionary (01 Mar 1998) |
| stanolone | <chemical> Chemical name: Androstan-3-one, 17-hydroxy-, (5alpha,17beta)- (12 Dec 1998) |
| stanozolol | <chemical> A synthetic steroid that has anabolic and androgenic properties. Pharmacological action: anabolic steroids. Chemical name: 2'H-Androst-2-eno(3,2-c)pyrazol-17-ol, 17-methyl-, (5alpha,17beta)- (12 Dec 1998) |
| stanyel | <zoology> See Stannel. Source: Websters Dictionary (01 Mar 1998) |
| stanza | Origin: It. Stanza a room, habitation, a stanza, i. E, a stop, fr. L. Stans, p.pr. Of stare to stand. See Stand, and cf. Estancia, Stance, Stanchion. 1. A number of lines or verses forming a division of a song or poem, and agreeing in meter, rhyme, number of lines, etc, with other divisions; a part of a poem, ordinarily containing every variation of measure in that poem; a combination or arrangement of lines usually recurring; whether like or unlike, in measure. "Horace confines himself strictly to one sort of verse, or stanza, in every ode." (Dryden) 2. An apartment or division in a building; a room or chamber. Source: Websters Dictionary (01 Mar 1998) |
| stapedectomy | <procedure, surgery> Surgical removal of the stapes, one of the ossicles in the middle ear. (27 Sep 1997) |
| stapedial | <anatomy> Of or pertaining to stapes. Origin: LL. Stapes stirrup. Source: Websters Dictionary (01 Mar 1998) |