| acarus | Origin: NL, from Gr. The cheese mite, tick. <zoology> A genus including many species of small mites. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| Acarus balatus | A tropical species of mite that causes a particularly severe type of scabies-like irritation. (05 Mar 2000) |
| Acarus folliculorum | A very common, universally distributed, and usually nonpathogenic species of mite that inhabits the hair follicles and sebaceous glands of humans, commonly around the nose and scalp margins. Synonym: Acarus folliculorum, Simonea folliculorum. (05 Mar 2000) |
| Acarus gallinae | The red hen-mite, a parasite of chickens, pigeons, and other birds; it sometimes attacks humans and causes an itching eruption, especially in sensitised individuals. Synonym: Acarus gallinae. Origin: derm-+ G. Nysso, to prick; L. Gallina, hen (05 Mar 2000) |
| Acarus hordei | The barley mite, a species that penetrates beneath the skin. (05 Mar 2000) |
| Acarus rhizoglypticus hyacinthi | A species that develops in spoiled onions and may cause dermatitis. (05 Mar 2000) |
| Acarus scabiei | A former term for Sarcoptes scabiei. (05 Mar 2000) |
| acaryote | A cell without a nucleus (karyon), such as the erythrocyte. Synonym: acaryote, akaryote. Origin: G. A-priv. + karyon, kernel, + kytos, a hollow (cell) (05 Mar 2000) |
| acatalasaemia | Absence or deficiency of catalase from blood and tissues, often manifested by recurrent infection or ulceration of the gums and related oral structures. Homozygotes may have complete absence (Japanese variety) or very low levels (Swiss variety) of catalase; heterozygotes have reduced catalase levels (hypocatalasia), which overlap with the normal range. Synonym: acatalasaemia, Takahara's disease. (05 Mar 2000) |
| acatalasia | Absence or deficiency of catalase from blood and tissues, often manifested by recurrent infection or ulceration of the gums and related oral structures. Homozygotes may have complete absence (Japanese variety) or very low levels (Swiss variety) of catalase; heterozygotes have reduced catalase levels (hypocatalasia), which overlap with the normal range. Synonym: acatalasaemia, Takahara's disease. (05 Mar 2000) |
| acatamathesia | An obsolete term for the loss or impairment of understanding, especially speech comprehension. Origin: G. A-priv. + katamathesis, a thorough knowledge or understanding (05 Mar 2000) |
| acataphasia | Inability to correctly formulate a statement. Origin: G. A-priv. + kataphasis, affirmation (05 Mar 2000) |
| acathectic | Rarely used term relating to acathexia. (05 Mar 2000) |
| acathexia | Rarely used term for an abnormal release of secretions. Origin: G. A-priv. + kathexis, retention (05 Mar 2000) |
| acathexis | Rarely used term for a mental disorder in which certain objects or ideas fail to arouse an emotional response in the individual. Origin: G. A-priv. + kathexis, retention (05 Mar 2000) |