| boy | A male child, from birth to the age of puberty; a lad; hence, a son. "My only boy fell by the side of great Dundee." (Sir W. Scott) Boy is often used as a term of comradeship, as in college, or in the army or navy. In the plural used colloquially of members of an assosiaton, fraternity, or party. Boy bishop, a boy (usually a chorister) elected bishop, in old Christian sports, and invested with robes and other insignia. He practiced a kind of mimicry of the ceremonies in which the bishop usually officiated. The Old Boy, the Devil. Yellow boys, guineas. Boy's love, a popular English name of Southernwood (Artemisia abrotonum);) called also lad's love. Boy's play, childish amusements; anything trifling. Origin: Cf. D. Boef, Fries. Boi, boy; akin to G. Bube, Icel. Bofi rouge. Source: Websters Dictionary (01 Mar 1998) |
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| Boyce | William H., U.S. Urologist, *1918. See: Smith-Boyce operation. (05 Mar 2000) |
| boycott | The process, fact, or pressure of boycotting; a combining to withhold or prevent dealing or social intercourse with a tradesman, employer, etc.; social and business interdiction for the purpose of coercion. Source: Websters Dictionary (01 Mar 1998) |
| Boyd communicating perforation veins | A vein connecting the superficial and deep venous system in the anteromedial calf. (05 Mar 2000) |
| Boyden | Edward A., U.S. Anatomist, 1886-1977. See: Boyden meal, Boyden's sphincter. (05 Mar 2000) |
| Boyden chamber | <apparatus> Simple chamber used to test for chemotaxis, especially of leucocytes. Consists of two compartments separated by a millipore filter (3-8 m pore size), chemotactic factor is placed in one compartment and the gradient develops across the thickness of the filter (ca 150 m). Cell movement into the filter is measured after an incubation period less than the time taken for the gradient to decay. See: checkerboard assay. (18 Nov 1997) |
| Boyden's sphincter | Smooth muscle sphincter of the common bile duct immediately proximal to the hepatopancreatic ampulla; it is this sphincter that controls the flow of bile in the duodenum. Synonym: musculus sphincter ductus choledochi, Boyden's sphincter, choledochal sphincter, sphincter muscle of common bile duct. (05 Mar 2000) |
| Boyer | Baron Alexis, French surgeon, 1757-1833. See: Boyer's bursa, Boyer's cyst. (05 Mar 2000) |
| Boyer's bursa | <anatomy> A bursa between the posterior surface of the body of the hyoid bone and the thyrohyoid membrane. Synonym: bursa retrohyoidea, Boyer's bursa, bursa of hyoid, subhyoid bursa. (05 Mar 2000) |
| Boyer's cyst | A subhyoid cyst. (05 Mar 2000) |
| Boyle | Hon. Robert, British physicist and chemist, 1627-1691. See: Boyle's law. (05 Mar 2000) |
| boyle's law | This law states that the volume of a sample of gas is, at a constant temperature, inversely proportional to the pressure of that gas. (09 Oct 1997) |