| bismuthyl | <chemical> Hydrous carbonate of bismuth, an earthy mineral of a dull white or yellowish colour. Alternative forms: bismuthite. Source: Websters Dictionary (01 Mar 1998) |
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| bismuthyl carbonate | (BiO)2CO3;used for the same purposes as bismuth subnitrate, but has lower toxicity. Synonym: bismuth carbonate, bismuth oxycarbonate, bismuthyl carbonate. (05 Mar 2000) |
| bismuthyl chloride | BiOCl;basic bismuth chloride, used for the same purposes as the subnitrate. Synonym: bismuth chloride oxide, bismuthyl chloride. (05 Mar 2000) |
| bison | <zoology> The aurochs or European bison. The American bison buffalo (Bison Americanus), a large, gregarious bovine quadruped with shaggy mane and short black horns, which formerly roamed in herds over most of the temperate portion of North America, but is now restricted to very limited districts in the region of the Rocky Mountains, and is rapidly decreasing in numbers. Origin: L. Bison, Gr, a wild ox; akin to OHG. Wisunt, wisant, G. Wisent, AS. Wesend, Icel. Visundr: cf. F. Bison. Source: Websters Dictionary (01 Mar 1998) |
| bisoprolol | <chemical> 1-(4-((2-(1-methylethoxy)ethoxy)methyl)phenoxy)-3-((1-methylethyl)amino)-2-propanol. A cardioselective beta-1-adrenergic blocker. It is effective in the management of hypertension and angina pectoris. Pharmacological action: adrenergic beta-antagonists, antihypertensive agents, sympatholytics. Chemical name: 2-Propanol, 1-(4-((2-(1-methylethoxy)ethoxy)methyl)phenoxy)-3-((1-methylethyl)amino)- (12 Dec 1998) |
| bisoxatin acetate | 2,2-Bis(p-hydroxyphenyl)-2H-1,4-benzoxazin-3(4H)-one diacetate;a laxative. (05 Mar 2000) |
| bisphenol a-glycidyl methacrylate | <chemical> The reaction product of bisphenol a and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. It is used as a bond implant material and as the resin component of dental sealants and composite restorative materials. Chemical name: 2-Propenoic acid, 2-methyl-, (1-methylethylidene)bis(4,1-phenyleneoxy(2-hydroxy-3,1-propanediyl)) ester (12 Dec 1998) |
| bisphosphoglycerate mutase | <enzyme> An enzyme that catalyses the transfer of phosphate from c-3 of 1,3-diphosphoglycerate to c-2 of 3-phosphoglycerate, forming 2,3-diphosphoglycerate. Chemical name: 3-Phospho-D-glycerate 1,2-phosphomutase Registry number: EC 5.4.2.4 (12 Dec 1998) |
| bisphospoglycerate | Previously known as 1,3-diphosphoglycerate (1,3DPG), this molecule is the first molecule that generates ATP in glycolysis. Its phosphorylgroupgenerates a high-potential phosphorylated compound through a redoxreaction.1,3BPG is also responsible for the production of an allosteric effector of haemoglobin, 2, 3-bisphosphoglycerate (2, 3BPG). Inthis reaction, a phosphoryl group is transferred from 1,3BPG to the C-2of 3PG. This yields 2, 3BPG and a different 3PG molecule. (09 Oct 1997) |
| bispinose | <zoology> Having two spines. Origin: Pref. Bi- + spinose. Source: Websters Dictionary (01 Mar 1998) |
| bisque | A white soup made of crayfish. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| bissextile | Leap year; every fourth year, in which a day is added to the month of February on account of the excess of the tropical year (365 d. 5 h. 48 m. 46 s) above 365 days. But one day added every four years is equivalent to six hours each year, which is 11 m. 14 s. More than the excess of the real year. Hence, it is necessary to suppress the bissextile day at the end of every century which is not divisible by 400, while it is retained at the end of those which are divisible by 400. Origin: L. Bissextilis annus, fr. Bissextus (bis + sextus sixth, fr. Sex six) the sixth of the calends of March, or twenty-fourth day of February, which was reckoned twice every fourth year, by the intercalation of a day. Source: Websters Dictionary (01 Mar 1998) |
| bistatin | <protein> Disintegrin found in the venom of the puff adder Bitis arietans. (18 Nov 1997) |
| bistephanic | Relating to both stephanions; denoting particularly the bistephanic width of the cranium, or bistephanic diameter, the shortest distance from one stephanion to the other. (05 Mar 2000) |
| bisteroid | A molecule composed of two molecules of a given steroid joined together by a carbon-to-carbon bond. (05 Mar 2000) |