| aldoside | A glucoside in which the sugar moiety is an aldose. (05 Mar 2000) |
|---|---|
| aldosterone | <endocrinology, hormone> A steroid hormone produced by the adrenal cortex, that controls salt and water balance in the kidney. Abnormally high levels of this hormone cause sodium retention, high blood pressure, heart rhythum irregularities and possibly paralysis (18 Nov 1997) |
| aldosterone antagonist | An agent that opposes the action of the adrenal hormone aldosterone on renal tubular mineralocorticoid retention; these agents, e.g., spironolactone, are useful in treating the hypertension of primary hyperaldosteronism, or the sodium retention of secondary hyperaldosteronism. (05 Mar 2000) |
| aldosterone antagonists | Compounds which inhibit or antagonise the biosynthesis or actions of aldosterone. (12 Dec 1998) |
| aldosteronism | <endocrinology> A disorder of excessive aldosterone secretion. (27 Sep 1997) |
| aldosteronogenesis | Formation of the hormone, aldosterone. Origin: aldosterone + G. Genesis, production (05 Mar 2000) |
| aldotetrose | A four-carbon aldose; e.g., threose, erythrose. (05 Mar 2000) |
| aldotriose | A three-carbon aldose; e.g., d-or l-glyceraldehyde. (05 Mar 2000) |
| aldoxime | A compound derived by the reaction of an aldose with hydroxylamine, thus containing the aldoxime group -HC==NOH. (05 Mar 2000) |
| Aldrich syndrome | <syndrome> An sex-linked (X chromosome) genetic disorder occurring in male children that is characterised by thrombocytopenia, eczema, melena and susceptibility to bacterial infections. Death often occurs from severe haemorrhage or overwhelming sepsis. Inheritance: sex-linked (X chromosome). (27 Sep 1997) |
| Aldrich, Robert Anderson | <person> U.S. Paediatrician, *1917. See: Aldrich syndrome, Wiskott-Aldrich syndrome. (05 Mar 2000) |
| aldrin | <chemical> A chlorinated organic insecticide whose use and manufacture has been banned in the U.S. (but not all other countries). The chemical can poison via skin contact, ingestion or inhalation, symptoms include kidney damage, shaking, slurred speech, convulsions, respiratory failure, and death. Chronic exposure to non-lethal doses of aldrin can cause liver damage and probably cancer. (09 Oct 1997) |
| alecithal | <biology> Applied to those ova which segment uniformly, and which have little or no food yelk embedded in their protoplasm. Origin: Gr. Priv. + yelk. Source: Websters Dictionary (01 Mar 1998) |
| alecithal ovum | An ovum in which the yolk is nearly absent, consisting of only a few particles. (05 Mar 2000) |
| alecost | <botany> The plant costmary, which was formerly much used for flavoring ale. Origin: Ale + L. Costus an aromatic plant: cf. Costmary. Source: Websters Dictionary (01 Mar 1998) |