| tetrad | A group of four, four pollen grains remaining fused together at maturity. (09 Oct 1997) |
|---|---|
| tetradactyl | Having only four fingers or toes on a hand or foot. Synonym: quadridigitate. Origin: tetra-+ G. Daktylos, finger or toe (05 Mar 2000) |
| tetradactyle | <zoology> Tetradactylous. Origin: Cf. F. Tetradactyle. Source: Websters Dictionary (01 Mar 1998) |
| tetradactylous | <zoology> Having, or characterised by, four digits to the foot or hand. Origin: Gr.; (see Tetra-) + finger, toe. Source: Websters Dictionary (01 Mar 1998) |
| tetradecane | <chemistry> A light oily hydrocarbon, C14H30, of the marsh-gas series; so called from the fourteen carbon atoms in the molecule. Origin: Tetra- + Gr. Ten. Source: Websters Dictionary (01 Mar 1998) |
| tetradecanoic acid | <biochemistry> The myristoyl group is one of the less common fatty acyl residues of phospholipids in biological membranes but is found as an N terminal modification of a large number of membrane associated proteins and some cytoplasmic proteins. It is a common modification of viral proteins. In all known examples, the myristoyl residue is attached to the amino group of N terminal glycine. The specificity of the myristoyl transferase enzymes is extremely high with respect to the fatty acyl residue. For many proteins, the addition of the myristoyl group is essential for membrane association. There is some evidence that myristoylated proteins do not interact with free lipid bilayer, but require a specific receptor protein in the target membrane. (18 Nov 1997) |
| tetradecanoylphorbol acetate | <chemical> A phorbol ester found in croton oil with very effective tumour promoting activity. It stimulates the synthesis of both DNA and RNA. Pharmacological action: carcinogens. Chemical name: Tetradecanoic acid, 9a-(acetyloxy)-1a,1b,4,4a,5,7a,7b,8,9,9a-decahydro-4a,7b-dihydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-5-oxo-1H-cyclopropa(3,4)benz(1,2-e)azulen-9-yl ester, (1aR-(1aalpha,1bbeta,4abeta,7aalpha,7balpha,8alpha,9beta,9aalpha))- (12 Dec 1998) |
| tetradecapoda | <zoology> Same as Arthrostraca. Origin: NL. See Tetra-, and Decapoda. Source: Websters Dictionary (01 Mar 1998) |
| tetradic | <chemistry> Of or pertaining to a tetrad; possessing or having the characteristics of a tetrad; as, a carbon is a tetradic element. Source: Websters Dictionary (01 Mar 1998) |
| tetradon | <zoology> See Tetrodon. Source: Websters Dictionary (01 Mar 1998) |
| tetradont | <zoology> See Tetrodont. Source: Websters Dictionary (01 Mar 1998) |
| tetradymite | <chemical> A telluride of bismuth. It is of a pale steel-gray colour and metallic luster, and usually occurs in foliated masses. Calles also telluric bismuth. Origin: Gr. Fourfold. So named from its occurrence in compound twin crystals, or fourlings. Source: Websters Dictionary (01 Mar 1998) |
| tetradynamia | <botany> A Linnaean class of plants having six stamens, four of which are longer than the others. Origin: NL, fr. Gr. (see Tetra-) + power. Source: Websters Dictionary (01 Mar 1998) |
| tetradynamian | <botany> A plant of the order Tetradynamia. Source: Websters Dictionary (01 Mar 1998) |
| tetradynamous | Of an androecium, consisting of four stamens of the same length and two of a different length. (09 Oct 1997) |