| trimethylaminuria | An inborn error of metabolism associated with an offensive body odour, the smell of rotting fish, due to the excessive excretion of tma in urine, sweat, and breath. Persons with tma may experience tachycardia (fast heart rate) and severe hypertension (high blood pressure) after eating cheese (which contains tyramine) and after using nasal sprays containing epinephrine. Tma is caused by a mutation (change) in the gene for an enzyme, flavin-containing monooxygenase-3 (fmo3) encoded by a gene on chromosome 1. The fmo3 enzyme metabolises tyramine (which is in cheese). The syndrome is associated with various psychosocial reactions, including social isolation, clinical depression and attempted suicide. (12 Dec 1998) |
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| trimethylcarbinol | Tertiary butyl alcohol. See: butyl alcohol. (05 Mar 2000) |
| trimethylene | <chemistry> A gaseous hydrocarbon, C3H6, isomeric with propylene and obtained from it indirectly. It is the base of a series of compounds analogous to the aromatic hydrocarbons. Usu. Called cyclopropane, because the three carbons form a ring: CH2 / \ H2C-CH2 Source: Websters Dictionary (01 Mar 1998) |
| trimethylethylene | <chemistry> One of a group of metameric hydrocarbons, C5H10, of the ethylene series. The colourless, volatile, mobile liquid commonly called amylene is a mixture of different members of the group. Source: Websters Dictionary (01 Mar 1998) |
| trimethylglycine | <chemical> A derivative of glycine characterised by high water solubility. Can function as an osmotic agent in plant tissues. See: biogenic amines. (18 Nov 1997) |
| trimethylglycocoll anhydride | <chemical> A derivative of glycine characterised by high water solubility. Can function as an osmotic agent in plant tissues. See: biogenic amines. (18 Nov 1997) |
| trimethylomelamine | (s-Triazine-2,4,6-triyltriimino)trimethanol;an antineoplastic agent. (05 Mar 2000) |
| trimethylsilyl compounds | Organic silicon derivatives used to characterise hydroxysteroids, nucleosides, and related compounds. Trimethylsilyl esters of amino acids are used in peptide synthesis. (12 Dec 1998) |
| trimethyltin compounds | Organic compounds composed of tin and three methyl groups. Affect mitochondrial metabolism and inhibit oxidative phosphorylation by acting directly on the energy conserving processes. (12 Dec 1998) |
| trimetozine | 4-(3,4,5-Trimethoxybenzoyl)morpholine;an antianxiety agent. (05 Mar 2000) |
| trimetrexate | <drug> An antibiotic approved as an alternative treatment for moderate-to-severe PCP. Trimetrexate causes severe bone marrow, liver, kidney and gastrointestinal toxicities. It must be administered along with leucovorin (folinic acid) to ameliorate these adverse effects. (19 Jan 1998) |
| trimetric | <chemistry> Same as Orthorhombic. Origin: Pref. Tri- + Gr. Measure. Source: Websters Dictionary (01 Mar 1998) |
| trimipramine | <drug> This tricyclic drug is used to treat depression. (09 Oct 1997) |
| trimorph | <chemistry> A substance which crystallizes in three distinct forms, or which has three distinct physical states; also, any one of these distinct forms. See Trimorphism. See: Trimorphous. Source: Websters Dictionary (01 Mar 1998) |
| trimorphic | Of, pertaining to, or characterised by, trimorphism; contrasted with monomorphic, dimorphic, and polymorphic. Origin: Gr. Three-formed; (see Tri-) + form. Source: Websters Dictionary (01 Mar 1998) |