| Alexander's disease | A rare, fatal central nervous system degenerative disease of infants, characterised by psychomotor retardation, seizures, and paralysis; megaloencephaly is associated with widespread leukodystrophic changes, especially in the frontal lobes. (05 Mar 2000) |
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| Alexander, Gustav | <person> Austrian otolaryngologist, *1873. See: Alexander's deafness. (05 Mar 2000) |
| Alexander, W. Stewart | <person> 20th century New Zealand pathologist. See: Alexander's disease. (05 Mar 2000) |
| alexia | <neurology> Loss of the ability to understand printed words or sentences (27 Sep 1997) |
| alexic | Pertaining to alexia. (05 Mar 2000) |
| alexin | An obsolete term for the bactericidal substances of cell-free serum, the activity of which is destroyed by heating at 56캜; applied by Bordet to the heat-labile substance normally present in serum and distinct from the sensitizing substance (antibody) produced by infection or immunization. In this sense it is synonymous with complement. Origin: G. Alexo, to ward off (05 Mar 2000) |
| alexin unit | The smallest amount (highest dilution) of complement that will cause haemolysis of a unit of red blood cells in the presence of a haemolysin unit. Synonym: alexin unit. (05 Mar 2000) |
| alexipharmac | 1. Synonym: antidotal. 2. An antidote. Origin: G. Alexipharmakos, preserving against poison (05 Mar 2000) |
| alexipharmic | <medicine> An antidote against poison or infection; a counterpoison. Source: Websters Dictionary (01 Mar 1998) |
| alexipharmical | <medicine> Expelling or counteracting poison; antidotal. Origin: Gr. Keeping off poison; to keep off + drug, poison: cf. F. Alexipharmaque. Source: Websters Dictionary (01 Mar 1998) |
| alexipyretic | <medicine> Serving to drive off fever; antifebrile. A febrifuge. Origin: Gr. + burning heat, fever, fire. Source: Websters Dictionary (01 Mar 1998) |
| alexiteric | <medicine> A preservative against contagious and infectious diseases, and the effects of poison in general. Origin: Gr. A remedy, an amulet: cf. F. Alexitere, LL. Alexiterium. Source: Websters Dictionary (01 Mar 1998) |
| alexiterical | <medicine> Resisting poison; obviating the effects of venom; alexipharmic. Origin: Gr. Fit to keep off or help, fr. One who keeps off, helper; to keep off: cf. F. Alexitere. Source: Websters Dictionary (01 Mar 1998) |
| alexithymia | Difficulty in recognizing and describing one's emotions, defining them in terms of somatic sensations or behavioural reactions. Origin: G. A-priv. + lexis, word, + -thymia, feelings, passion (05 Mar 2000) |
| aleydigism | Aplasia of Leydig cells, seen in hypogonadotrophic hypogonadism. (05 Mar 2000) |