| bay | A part of a sea or lake indenting the shore line, the word is often applied to very large tracts of water around which the land forms a curve, as Hudson's Bay. (09 Oct 1997) |
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| bay-antler | <zoology> The second tine of a stag's horn. See Antler. See: Bez-Antler. Source: Websters Dictionary (01 Mar 1998) |
| bay-k-8644 | <chemical> A dihydropyridine derivative, which, in contrast to nifedipine, functions as a calcium channel agonist. The compound facilitates calcium influx through partially activated voltage-dependent calcium channels, thereby causing vasoconstrictor and positive inotropic effects. It is used primarily as a research tool. Pharmacological action: calcium channel agonists. Chemical name: 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, methyl ester (12 Dec 1998) |
| bay leaf | See Bay. Source: Websters Dictionary (01 Mar 1998) |
| bay region | <chemistry> An indentation of three fused benzene rings. A common bay region is the site on benzo(a)pyrene, an indirect carcinogen that is metabolically activated by the p-450 system at the 7,8-double bond, leading to a 7,8-oxide, which is rapidly converted to a 7,8-dihydrodiol and later epoxidated near the bay region at the 9,10-double bond. The resulting product, a diol-epoxide is a poor substrate for epoxide hydratase and is released from the mitochondria into the cell as a highly reactive electrophil, becoming an ultimate carcinogen, as it reacts with negative charges in DNA. (25 Jun 1999) |
| bay sore | Lesion of the pinna of the ear due to cutaneous leishmaniasis, usually Leishmania mexicana; seen in workers harvesting chicle plants in Central America. Synonym: bay sore. Origin: Sp. Chicle farmer, fr. Chicle, fr. Nahuatl chictli (05 Mar 2000) |
| bay tree | A species of laurel. (Laurus nobilis). Source: Websters Dictionary (01 Mar 1998) |
| botany bay | A harbor on the east coast of Australia, and an English convict settlement there; so called from the number of new plants found on its shore at its discovery by Cook in 1770. Hence, any place to which desperadoes resort. <medicine> Botany Bay kino, a resin of reddish yellow colour, resembling gamboge, the product of different Australian species of Xanthorrhaea, especially. The grass three (X. Hastilis) Source: Websters Dictionary (01 Mar 1998) |
| celomic bay | Medial and lateral recesses at either side of the urogenital mesentery of the embryo, superior recess of the vestibule of the lesser peritoneal space; with the formation of the diaphragm, a portion of the right recess is cut off and becomes the infracardiac bursa; the portion below the diaphragm becomes the superior recess of the lesser peritoneal sac; the left recess is lost. Synonym: pneumatoenteric. (05 Mar 2000) |
| oil of bay | Volatile oil derived by steam distillation of the dried leaves of Pimenta (Myrcia) acris (family Myrtaceae); oil of myrcia; used as an aromatic in the manufacture of bay rum and as a pharmaceutical aid. (05 Mar 2000) |
| lacrimal bay | The small cistern-like area of the conjunctiva at the medial angle of the eye, in which the tears collect after bathing the anterior surface of the eyeball and the conjunctival sac. Synonym: lacus lacrimalis, lacrimal bay. (05 Mar 2000) |
| acute African sleeping sickness | A disease of humans caused by Trypanosoma brucei rhodesiense in eastern Africa from Ethiopia and Uganda south to Zimbabwe; it is clinically similar to Gambian trypanosomiasis but of shorter duration and more acute in form; patients suffer repeated episodes of pyrexia, become anaemic, and die commonly from cardiac failure. Synonym: acute African sleeping sickness, acute trypanosomiasis, East African sleeping sickness, East African trypanosomiasis. (05 Mar 2000) |
| acute mountain sickness | <chest medicine> A condition that results from prolonged exposure to high altitude. Symptoms include a continuous dry cough, shortness of breath, poor exercise tolerance, dizziness, headache, sleep difficulty, anorexia, confusion, fatigue and a rapid pulse. Treatment includes the immediate movement to a lower altitude. Prophylaxis has been accomplished successfully with the use of acetazolamide (Diamox). (27 Sep 1997) |
| aerial sickness | A condition that results from prolonged exposure to high altitude. Symptoms include a continuous dry cough, shortness of breath, poor exercise tolerance, dizziness, headache, sleep difficulty, anorexia, confusion, fatigue and a rapid pulse. Treatment includes the immediate movement to a lower altitude. Prophylaxis has been accomplished successfully with the use of acetazolamide (Diamox). (27 Sep 1997) |
| african horse sickness | An insect-borne reovirus infection of horses, mules and donkeys in africa and the middle east; characterised by pulmonary oedema, cardiac involvement, and oedema of the head and neck. (12 Dec 1998) |