| boundary lamina | A basement membrane-like structure that invests muscle cells, fat cells, and Schwann cells. See: basement membrane, basal lamina. (05 Mar 2000) |
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| boundary layer | <radiobiology> In fluid flow, a narrow region next to a fixed boundary or surface where the fluid velocity rapidly changes from zero to some finite value. The term has been generalised to situations with similar mathematics. (09 Oct 1997) |
| bounty | Origin: OE. Bounte goodness, kindness, F. Bonte, fr. L. Bonitas, fr. Bonus good, for older duonus; cf. Skr. Duvas honor, respect. 1. Goodness, kindness; virtue; worth. "Nature set in her at once beauty with bounty." (Gower) 2. Liberality in bestowing gifts or favors; gracious or liberal giving; generosity; munificence. "My bounty is as boundless as the sea." (Shak) 3. That which is given generously or liberally. "Thy morning bounties." 4. A premium offered or given to induce men to enlist into the public service; or to encourage any branch of industry, as husbandry or manufactures. Bounty jumper, one who, during the latter part of the Civil War, enlisted in the United States service, and deserted as soon as possible after receiving the bounty. Queen Anne's bounty, a provision made in Queen Anne's reign for augmenting poor clerical livings. Synonym: Munificence, generosity, beneficence. Source: Websters Dictionary (01 Mar 1998) |
| bouquet | 1. A nosegay; a bunch of flowers. 2. A perfume; an aroma; as, the bouquet of wine. Origin: F. Bouquet bunch, bunch of flowers, trees, feathers, for bousquet, bosquet, thicket, a little wood, dim. Of LL. Boscus. See Bush thicket, and cf. Bosket, Busket. Source: Websters Dictionary (01 Mar 1998) |
| bouquet fever | A tropical disease caused by dengue virus (Arbovirus), that is transmitted by the bite of an infected mosquito of the genus Aedes). Four severity grades of the illness are seen: grade I (fever and constitutional symptoms), grade II (grade I plus spontaneous bleeding of skin, gums or gastrointestinal tract), grade III (grade II plus agitation and circulatory failure) and grade IV (profound shock). Grade I infection is seen most frequently in world travelers, where it is usually self-limited and rarely fatal. The other grades are referred to as dengue haemorrhagic fever and are often fatal. Dengue haemorrhagic fever appears to be an infection by one of the other dengue viruses. Prior immunity to a different dengue virus type appears to be important in the development of the more serious haemorrhagic form. Vaccines are available. Protection from mosquitoes is an important preventive measure. (27 Sep 1997) |
| bouquetin | <zoology> The ibex. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| Bourdon | Eugene, French engineer and inventor, 1808-1884. See: Bourdon tube. (05 Mar 2000) |
| Bourdon tube | A curved and partially flattened tube that tends to straighten out in proportion to internal pressure; used as a transducer to move the pointer of an aneroid manometer. (05 Mar 2000) |
| Bourgery | Marc-Jean, French anatomist and surgeon, 1797-1849. See: Bourgery's ligament. (05 Mar 2000) |
| Bourgery's ligament | <anatomy> Reflected tendon of insertion of semimembranous muscle; a fibrous band that extends across the back of the knee from its separation from the direct tendon of insertion on the medial condyle of the tibia to the lateral condyle of the femur. Synonym: ligamentum popliteum obliquum, Bourgery's ligament. (05 Mar 2000) |
| bouri | <zoology> A mullet (Mugil capito) found in the rivers of Southern Europe and in Africa. Origin: Native name. Source: Websters Dictionary (01 Mar 1998) |
| Bourneville | Desire-Magloire, French physician, 1840-1909. See: Bourneville's disease, Bourneville-Pringle disease. (05 Mar 2000) |
| Bourneville's disease | <radiology> (Bourneville disease) autosomal dominant phakomatosis classic triad: seizures, retardation, adenoma sebaceum, calcified subependymal hamartomas, uncalcified tubers in cerebral cortex, enhancing lesion most likely to be malignant transformation to giant cell astrocytoma associated with: skin lesions, angiomyolipoma, increased risk of renal cell carcinoma (12 Dec 1998) |
| Bourneville-Pringle disease | Facial lesions with tuberous sclerosis, first reported as adenoma sebaceum, but now recognised as angiofibromas. (05 Mar 2000) |
| bournonite | <chemical> A mineral of a steel-gray to black colour and metallic luster, occurring crystallized, often in twin crystals shaped like cogwheels (wheel ore), also massive. It is a sulphide of antimony, lead, and copper. Origin: Named after Count Bournon, a minerologist. Source: Websters Dictionary (01 Mar 1998) |