| acritochromacy | Colour blindness; achromatopsy. Origin: Gr. Undistinguishable; priv. + to separate, distinguish + colour. Source: Websters Dictionary (01 Mar 1998) |
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| acro- | Combining form meaning: 1. Extremity, tip, end, peak, topmost. 2. Extreme. Origin: G. Akron, highest point, extremity; akros, topmost, outermost, inmost, extreme, tip (05 Mar 2000) |
| acro-osteolysis | <radiology> Loss of terminal tufts of digits, scleroderma / connective-tissue disease, psoriatic arthritis, Reiter disease, frostbite (thumbs spared), leprosy, polyvinylchloride exposure, hyperparathyroidism, Lesch-Nyhan syndrome (they bite them off), cleidocranial dysostosis, progeria, pyknodysostosis (aplasia/hypoplasia of distal digits), (?) sarcoidosis (12 Dec 1998) |
| acroagnosis | Loss or impairment of the sensory recognition of a limb. Absence of acrognosis. (05 Mar 2000) |
| acroanesthesia | Anaesthesia of one or more of the extremities. Origin: acro-+ G. An-priv. + aisthesis sensation (05 Mar 2000) |
| acroarthritis | Inflammation of the joints of the hands or feet. Origin: acro-+ G. Arthron, joint, + -itis (05 Mar 2000) |
| acroasphyxia | Impaired digital circulation, possibly a mild form of Raynaud's disease, marked by a purplish or waxy white colour of the fingers, with subnormal local temperature and paresthesia. Synonym: dead fingers, waxy fingers. Origin: acro-+ G. Asphyxia, stoppage of the pulse (05 Mar 2000) |
| acroataxia | Ataxia affecting the distal portion of the extremities, i.e., hands and fingers, feet, and toes. Compare: proximoataxia. Origin: acro-+ ataxia (05 Mar 2000) |
| acroblast | <biology> A granule within the young sperm cell (a spermatid) that eventually becomes the acrosome or caplike frontal portion of the mature sperm cell. (13 Nov 1997) |
| acrobrachycephaly | Type of craniosynostosis with premature closure of the coronal suture, resulting in abnormally short anteroposterior diameter of the skull. Origin: acro-+ G. Brachys, short, + kephale, head (05 Mar 2000) |
| acrocarpous | <botany> Having a terminal fructification; having the fruit at the end of the stalk. Having the fruit stalks at the end of a leafy stem, as in certain mosses. Origin: Gr. Extreme, highest + fruit. Source: Websters Dictionary (01 Mar 1998) |
| acrocentric | <cell biology> A chromosome or chromatids with a non-centrally-located centromere, producing chromosome arms with unequal lengths. (13 Nov 1997) |
| acrocentric chromosome | A chromosome with the centromere placed very close to one end so that the short arm is very small, often with a satellite. (05 Mar 2000) |
| acrocephalia | A type of craniosynostosis in which there is premature closure of the lambdoid and coronal sutures, resulting in an abnormally high, peaked, or conically shaped skull. Synonym: acrocephalia, acrocephaly, hypsicephaly, hypsocephaly, oxycephalia, steeple skull, tower skull, turricephaly. Origin: G. Oxys, pointed, + kephale, head (05 Mar 2000) |
| acrocephalic | Characterised by a high skull. Origin: Gr. Highest + . See Cephalic. Source: Websters Dictionary (01 Mar 1998) |