| achromaturia | The passage of colourless or very pale urine. Origin: G. A-priv. + chroma, colour, + ouron, urine (05 Mar 2000) |
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| achromia | 1. Depigmentation; absence, or loss of natural pigmentation of the skin and iris; may be congenital or acquired. See: depigmentation. 2. Lack of capacity to accept stains in cells or tissue. Synonym: achromasia, achromatosis. Origin: G. A-priv. + chroma, colour (05 Mar 2000) |
| achromia parasitica | A phase of lessening or absence of pigmentation in cutaneous lesions, caused by the fungus Malassezia furfur. See: tinea versicolor. (05 Mar 2000) |
| achromia unguium | The occurrence of white spots or patches under the nails, of unknown cause; the decoloration may be total or in the form of lines (striate or transverse leukonychia) or dots (punctate leukonychia). Synonym: achromia unguium, canities unguium, leukopathia unguis. Origin: Leuko-+ G. Onyx (onych-), nail Apparent leukonychia, pallor of the nail not due to subungual air bubbles. (05 Mar 2000) |
| achromic | Colourless. (05 Mar 2000) |
| achromocyte | A hypochromic, crescent-shaped erythrocyte, probably resulting from artifactual rupture of a red cell with loss of haemoglobin. Synonym: achromacyte, achromatocyte, ghost corpuscle, phantom corpuscle, Ponfick's shadow, shadow corpuscle, shadow, Traube's corpuscle. Origin: G. A-priv. + chroma, colour, + kytos, hollow (cell) (05 Mar 2000) |
| achromoderma | An absence of pigment, partial or total, in the skin. Synonym: achromoderma, hypomelanosis, leukopathia, leukopathy. Origin: Leuko-+ G. Derma, skin (05 Mar 2000) |
| achromophil | 1. Not being coloured by the histologic or bacteriologic stains. Synonym: achromophilic, achromophilous. 2. A cell or tissue that cannot be stained in the usual way. Synonym: achromophil. Origin: G. A-priv. + chroma, colour, + philos, fond (05 Mar 2000) |
| achromophilic | 1. Not being coloured by the histologic or bacteriologic stains. Synonym: achromophilic, achromophilous. 2. A cell or tissue that cannot be stained in the usual way. Synonym: achromophil. Origin: G. A-priv. + chroma, colour, + philos, fond (05 Mar 2000) |
| achromotrichia | <clinical sign> Absence or loss of pigment in the hair. (27 Sep 1997) |
| achroodextrin | <physiology> Dextrin not colourable by iodine. See Dextrin. Origin: Gr. Colourless + E. Dextrin. Source: Websters Dictionary (01 Mar 1998) |
| achroous | Colourless; achromatic. Origin: Gr.; priv. + colour. Source: Websters Dictionary (01 Mar 1998) |