| bicuspid | <anatomy> One of the two double-pointed teeth which intervene between the canines (cuspids) and the molars, on each side of each jaw. See Tooth. Source: Websters Dictionary (01 Mar 1998) |
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| bicuspid aortic valve | See: familial aortic ectasia syndrome. (05 Mar 2000) |
| bicuspid tooth | A tooth usually having two tubercles or cusps on the grinding surface and a flattened root, single in the lower jaw and upper second premolar, and furrowed in the upper first premolar. There are four premolars in each jaw, two on either side between the canine and the molars; there are no premolars in the deciduous dentition. Synonym: dens premolaris, bicuspid tooth, dens bicuspidus. (05 Mar 2000) |
| bicuspid valve | <anatomy, cardiology> The heart valve that divides the left atrium and left ventricle. During left atrial contraction, the mitral valve opens to allow blood to flow into the left ventricle. Upon closure, the mitral valve prohibits the regurgitation of blood back into the left atrium. The mitral valve is the only heart valve that has only 2 valve cusps (all others have 3). (13 Nov 1997) |
| bicuspidate | Having two points or prominences; ending in two points; said of teeth, leaves, fruit, etc. Source: Websters Dictionary (01 Mar 1998) |
| bicuspidization | Surgical change of a normally tricuspid valve into a functioning bicuspid valve; performed in correction of tricuspid valvar disease. (05 Mar 2000) |