| barosinusitis | Sinus troubles, particulaqrly with pain, due to changing atmospheric pressures, as when going up or down in a plane. Also called aerosinusitis or sinus barotrauma. (12 Dec 1998) |
|---|---|
| barostat | A pressure-regulating device or structure, such as the baroreceptors of the carotid sinus and aortic arch, when connected to effectors providing negative feedback. Origin: G., baros, weight, pressure, + statos, made to stand (05 Mar 2000) |
| barotaxis | Reaction of living tissue to changes in pressure. Synonym: barotropism. Origin: G. Baros, weight, + taxis, order (05 Mar 2000) |
| barotitis | Middle ear problems due to changing atmospheric pressures, as when a plane descends to land. The problems include ear pain, ringing, diminished hearing and, sometimes, dizziness. The word barotitis (pronounced bar-o-tit-is) is compounded from bar- as in barometer + otitis meaning inflammation of the ear. Alternate terms include aerotitis, aerotitis media, barotitis media, and otic barotrauma. (12 Dec 1998) |
| barotitis externa | This refers to the effect of pressure on the external ear canal. (27 Sep 1997) |
| barotitis media | This refers to the effect of pressure on the middle ear space (inner aspect of the ear drum). (27 Sep 1997) |
| barotolerant | A microorganism which grows best in environments with standard atmospheric pressure, but can also survive and grow in high pressure environments. (09 Oct 1997) |
| barotrauma | An injury that result as the result of rapid or extreme changes in pressure. (27 Sep 1997) |
| barotrauma, otic | See: Barotitis. (12 Dec 1998) |
| barotrauma, sinus | See: Barosinusitis. (12 Dec 1998) |
| barotropism | Synonym: barotaxis. Origin: G. Baros, weight, + trope, a turning (05 Mar 2000) |
| barque | 1. Formerly, any small sailing vessel, as a pinnace, fishing smack, etc.; also, a rowing boat; a barge. Now applied poetically to a sailing vessel or boat of any kind. 2. A three-masted vessel, having her foremast and mainmast squarerigged, and her mizzenmast schooner-rigged. Origin: F. Barque, fr. Sp. Or It. Barca, fr. LL. Barca for barica. See Barge. Source: Websters Dictionary (01 Mar 1998) |
| Barr body | Small dark staining inactivated X chromosome seen in female (XX) cells. According to the Lyon hypothesis, random inactivation occurs. (18 Nov 1997) |
| Barr chromatin body | Condensed chromatin of the inactivated X chromosome in female mammals (Barr body). (18 Nov 1997) |
| Barr, Murray | <person> Canadian microanatomist, *1908. See: Barr chromatin body. (05 Mar 2000) |