| acapnia | Less than the normal level of carbon dioxide in the blood. The opposite of hypercapnia. (12 Dec 1998) |
|---|---|
| acapnial alkalosis | The alkalosis resulting from abnormal loss of CO2 produced by hyperventilation, either active or passive, with concomitant reduction in arterial plasma bicarbonate concentration. See: compensated alkalosis. Synonym: acapnial alkalosis. (05 Mar 2000) |
| acapsular | <botany> Having no capsule. Origin: Pref. A- not + capsular. Source: Websters Dictionary (01 Mar 1998) |
| acarbia | An obsolete term denoting pronounced reduction in bicarbonate of the blood (hypocarbia). Origin: G. A-priv. + carbon (05 Mar 2000) |
| acarbose 7-phosphotransferase | <enzyme> Catalyses reaction between ATP and acarbose to form acarbose 7-phosphate; isolated from actinoplanes; n-terminal amino acid sequence given in first source Registry number: EC 2.7.1.- Synonym: acarbose kinase (26 Jun 1999) |
| acardia | Congenital absence of the heart; a condition sometimes occurring in monozygotic twins or in the smaller, parasitic member of conjoined twins when its partner monopolises the placental blood supply. Acardia can also occur in triplet pregnancies. Origin: G. A-priv. + kardia, heart (05 Mar 2000) |
| acardiac | Without a heart; as, an acardiac foetus. Origin: Gr.; priv. + heart. Source: Websters Dictionary (01 Mar 1998) |
| acardiotrophia | An obsolete term for atrophy of the myocardium. Origin: G. A-priv. + kardia, heart, + trophe, nourishment (05 Mar 2000) |
| acardius | A twin without a heart, parasitic on, or utilizing the placental circulation of, its mate. (05 Mar 2000) |
| acardius acephalus | Acephalocardius;an acardiac foetus in which the head and thoracic organs are absent. Ribs and vertebrae may be present, and upper limbs are either absent or defective. (05 Mar 2000) |
| acardius amorphus | A shapeless mass covered by skin and hair. (05 Mar 2000) |
| acardius anceps | An acardiac foetus with partly developed head and deformed face, trunk, and limbs. See: hemiacardius. (05 Mar 2000) |
| acari | A large, cosmopolitan order of arachnids comprising the mites and ticks, including parasites of plants, animals, and man, as well as several important disease vectors. (12 Dec 1998) |
| acariasis | Any disease caused by mites, usually a skin infestation. See: mange. Synonym: acaridiasis, acarinosis. (05 Mar 2000) |
| acaricide | An agent that kills acarines; commonly used to denote chemicals that kill ticks. Origin: Mod. L. Acarus, a mite, fr. G. Akari + L. Caedo, to cut, kill (05 Mar 2000) |