| alkapton | Synonym: homogentisic acid. Origin: Boedeker's coinage fr. Alkali + L + G. Kaptein, to suck up greedily (05 Mar 2000) |
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| alkaptonuria | <biochemistry> Congenital absence of homogentisic acid oxidase, an enzyme that breaks down tyrosine and phenylalanine. Accumulation of homogentisic acid in homozygotes causes brown pigmentation of skin and eyes and damage to joints, urine blackens on standing. Origin: Gr. Ouron = urine (18 Nov 1997) |
| alkaptonuric | 1. Relating to alcaptonuria. 2. A person with alcaptonuria. (05 Mar 2000) |