| buttonhole iridectomy | peripheral iridectomy |
|---|---|
| buttonhole stenosis | Extreme narrowing, usually of the mitral valve. (05 Mar 2000) |
| buttonmold | A disk of bone, wood, or other material, which is made into a button by covering it with cloth. Alternative forms: buttonmould] Fossil buttonmolds, joints of encrinites. See Encrinite. Source: Websters Dictionary (01 Mar 1998) |
| buttonweed | <botany> The name of several plants of the genera Spermacoce and Diodia, of the Madder family. Source: Websters Dictionary (01 Mar 1998) |
| buttonwood | <botany> The Platanus occidentalis, or American plane tree, a large tree, producing rough balls, from which it is named; called also buttonball tree, and, in some parts of the United States, sycamore. The California buttonwood is P. Racemosa. Source: Websters Dictionary (01 Mar 1998) |
| buttress | A flange of tissue protruding from the main outline of the base of a tree. (09 Oct 1997) |
| buttress foot | A condition of the horse's foot in which there is exostosis of the extensor process of the third phalanx, with swelling and chronic inflammation at the coronary band on the anterior surface of the foot. Synonym: pyramidal disease. (05 Mar 2000) |
| buttress plate | A metal plate used to support the internal fixation of a fracture. (05 Mar 2000) |
| butty | <chemical> One who mines by contract, at so much per ton of coal or ore. Source: Websters Dictionary (01 Mar 1998) |
| butyl | <chemistry> A compound radical, regarded as butane, less one atom of hydrogen. Origin: L. Butyrum butter + -yl. See Butter. Source: Websters Dictionary (01 Mar 1998) |
| butyl alcohol | C4H9OH;several isomeric forms are known: (05 Mar 2000) |
| butyl aminobenzoate | N-butyl p-aminobenzoate;a local anaesthetic, very insoluble and only slightly absorbed. Synonym: butamben. (05 Mar 2000) |
| butylated hydroxyanisole | <chemical> Mixture of 2- and 3-tert-butyl-4-methoxyphenols that is used as an antioxidant in foods, cosmetics, and pharmaceuticals. It may inhibit carcinogenesis. Pharmacological action: antioxidants, food preservatives, pharmaceutic aid. Chemical name: Phenol, (1,1-dimethylethyl)-4-methoxy- (12 Dec 1998) |
| butylated hydroxytoluene | <chemical> Antioxidant used in foods, cosmetics, petroleum products, etc. It may inhibit some neoplasms and facilitate others. Pharmacological action: antioxidants, food preservatives, pharmaceutic aid. Chemical name: Phenol, 2,6-bis(1,1-dimethylethyl)-4-methyl- (12 Dec 1998) |
| butylene | <chemistry> Any one of three metameric hydrocarbons, C4H8, of the ethylene series. They are gaseous or easily liquefiable. Origin: From Butyl. Source: Websters Dictionary (01 Mar 1998) |