| tyremesis | Vomiting of curdy material by infants. Synonym: tyrosis. Origin: G. Tyros, cheese, + emesis, vomiting (05 Mar 2000) |
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| tyrkey | Origin: So called because it was formerly erroneously believed that it came originally from Turkey: cf. F. Turquie Turkey. See Turk. <zoology> Any large American gallinaceous bird belonging to the genus Meleagris, especially the North American wild turkey (Meleagris gallopavo), and the domestic turkey, which was probably derived from the Mexican wild turkey, but had been domesticated by the Indians long before the discovery of America. The Mexican wild turkey is now considered a variety of the northern species (var. Mexicana). Its tall feathers and coverts are tipped with white instead of brownish chestnut, and its flesh is white. The Central American, or ocellated, turkey (M. Ocellata) is more elegantly coloured than the common species. See Ocellated. The Australian, or native, turkey is a bustard (Choriotis australis). See Native. <botany> Turkey beard, the turkey buzzard. Source: Websters Dictionary (01 Mar 1998) |
| tyrocidin | An antibacterial cyclopeptide obtained from Bacillus brevis. See: tyrothricin. (05 Mar 2000) |
| tyrocidine | <chemical> An antibiotic mixture produced by bacillus brevis which may be separated into three components, tyrocidines a, b, and c. It is the major constituent (40-60 per cent) of tyrothricin, gramicidin accounting for the remaining 10-20 per cent active material. It is a topical antimicrobial agent, that is very toxic parenterally. Pharmacological action: anti-infective agents, local, antibiotics, peptide. (12 Dec 1998) |
| tyrocidine synthetase | <enzyme> Consists of 3 multifunctional enzymes involved in the biosynthesis of the cyclic decapeptide tyrocidine; tyrocidine synthetase 1 activates the phenylalanine and racemises it; tyrocidine sythetase 2 activates proline, phenylalanine and phenylalanine in positions 2,3 and 4 and racemises phenylalanine at position 4; tyrocidine synthetase 3 catalyses the activation of the remaining 6 amino acids; see also record for tyrocidine synthetase 1 Registry number: EC 6.3.2.- Synonym: tycb gene product, tycc gene product (26 Jun 1999) |
| Tyrode's solution | A modified Locke's solution; it contains 8 g of NaCl, 0.2 g of KCl, 0.2 g of CaCl2, 0.1 g of MgCl2, 0.05 g of NaH2PO4, 1 g of NaHCO3, 1 g of d-glucose, and water to make 1000 ml; used to irrigate the peritoneal cavity, and in laboratory work. (05 Mar 2000) |
| Tyrode, Maurice | <person> U.S. Pharmacologist, 1878-1930. See: Tyrode's solution. (05 Mar 2000) |
| tyrogenous | Produced by, or originating in, cheese. Origin: G. Tyros, cheese, + G. -gen, producing (05 Mar 2000) |
| Tyroglyphus longior | Synonym: Tyrophagus putrescentiae. Origin: G. Tyros, cheese, + glyphe carving (05 Mar 2000) |
| tyroid | Cheesy; caseous. Origin: G. Tyrodes, fr. Tyros, cheese, + eidos, resemblance (05 Mar 2000) |
| tyroketonuria | The urinary excretion of ketonic metabolites of tyrosine, such as p-hydroxyphenylpyruvic acid. (05 Mar 2000) |
| tyrolite | <chemical> A translucent mineral of a green colour and pearly or vitreous luster. It is a hydrous arseniate of copper. Origin: From Tyrol, where it occurs. Source: Websters Dictionary (01 Mar 1998) |
| tyroma | <tumour> A caseous tumour. Origin: G. Tyros, cheese, + -oma, tumour (05 Mar 2000) |
| tyropanoate | <chemical> Sodium 3-butyramido-alpha-ethyl-2,4,6-triiodohydro-cinnamate. A diagnostic aid as a radiopaque medium in cholecystography. Pharmacological action: contrast media. Chemical name: Benzenepropanoic acid, alpha-ethyl-2,4,6-triiodo-3-((1-oxobutyl)amino)- (12 Dec 1998) |
| tyropanoate sodium | 3-Butyramido-alpha-ethyl-2,4,6-triiodohydrocinnamic acid, sodium salt;an oral contrast medium for cholecystography. (05 Mar 2000) |