| polyadenous | Pertaining to or involving many glands. (05 Mar 2000) |
|---|---|
| polyadenylation | 1. The process of formation of poly(adenylic acid). 2. The covalent modification of a macromolecule (e.g., mRNA) by the formation of a polyadenylyl moiety covalent linked to the macromolecule. (05 Mar 2000) |
| polyadenylic acid | <biochemistry, molecular biology> Polynucleotide chain consisting entirely of residues of adenylic acid (i.e. The base sequence is AAAA.AAAA). Polyadenylic chains of various lengths are found at the 3' end of most eukaryotic mRNAs, the poly A tail. (11 Jan 1998) |
| polyalcohol | An aliphatic or alicyclic molecule characterised by the presence of two or more hydroxyl groups; e.g., glycerol, inositol. A polymer of an alcohol. Origin: G. Polys, much, many + alcohol (05 Mar 2000) |
| polyallelism | The existence of multiple alleles at a genetic locus. (05 Mar 2000) |
| polyalveolar lobe | A type of congenital anomaly where a severalfold increase in the total alveolar number leads to congenital lobar emphysema. (05 Mar 2000) |
| polyamine | A polymer of an amine. Class name for substances of the general formula H2N(CH2)nNH2, H2N(CH2)nNH(CH2)nNH2, H2N(CH2)nNH(CH2)nNH(CH2)nNH2, where n = 3, 4, or 5. Many polyamine's arise by bacterial action on protein; many are normally occurring body constituents of wide distribution, or are essential growth factors for microorganisms. Origin: G. Polys, much, many + amine (05 Mar 2000) |
| polyamine oxidase | <enzyme> Aminoacetone is oxidatively deaminated to methylglyoxal; spermidine gives putrescine and 3-aminopropionaldehyde; spermine gives spermidine and 3-aminopropionaldehyde Registry number: EC 1.5.3.3 Synonym: spermine oxidase, spermidine oxidase, aminoacetone oxidase (26 Jun 1999) |
| polyamine-methylene resin | A synthetic acid-binding resin used as a gastric antacid. (05 Mar 2000) |
| polyamino acids | Polypeptides that are polymers of aminoacyl groups, i.e., of -NH-CHR-CO-; typically, a term used with homopolymers. See: poly-. (05 Mar 2000) |
| polyandria | <botany> A Linnaean class of monoclinous or hermaphrodite plants, having many stamens, or any number above twenty, inserted in the receptacle. Origin: NL. See Polyandry. Source: Websters Dictionary (01 Mar 1998) |
| polyandrian | <botany> Polyandrous. Source: Websters Dictionary (01 Mar 1998) |
| polyandric | Pertaining to, or characterised by, polyandry; mating with several males. "Polyandric societies." Origin: Cf. Polyandrique. Source: Websters Dictionary (01 Mar 1998) |
| polyandrous | <botany> Belonging to the class Polyandria; having many stamens, or any number above twenty, inserted in the receptacle. Source: Websters Dictionary (01 Mar 1998) |
| polyandry | 1. <plant biology> Describes the condition of a plant whose flowers have many stamens (male pollen-producing structures). 2. Describes the practice of a woman having two or more husbands at the same time. (09 Oct 1997) |