| acrofacial syndrome | Mandibulofacial dysostosis associated with malformations of the extremities such as defective radius and thumbs, and radioulnar synostosis. See: Treacher Collins' syndrome Synonym: acrofacial syndrome. Origin: dys-+ G. Osteon, bone, + -osis, condition (05 Mar 2000) |
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| acrogen | <botany> A plant of the highest class of cryptograms, including the ferns, etc. See Cryptogamia. <geology> The Age of Acrogens, the age of coal plants, or the carboniferous era. Origin: Gr. Extreme, high + -gen. Source: Websters Dictionary (01 Mar 1998) |
| acrogenous | <botany> Increasing by growth from the extremity; as, an acrogenous plant. Source: Websters Dictionary (01 Mar 1998) |
| acrogeria | Congenital reduction or loss of subcutaneous fat and collagen of the hands and feet, giving the appearance of senility; the genetic evidence is ambiguous. Origin: acro-+ G. Geron, old (05 Mar 2000) |
| acrognosis | Cenesthesia, or normal sensory perception, of the extremities. Origin: acro-+ G. Gnosis, knowledge (05 Mar 2000) |
| acrohyperhidrosis | Hyperhidrosis of the hands and feet. (05 Mar 2000) |
| acrokeratoelastoidosis | A developmental papular keratosis of the palms and soles, with disorganization of dermal elastic fibres; unrelated to sunlight and physical trauma. See: keratoelastoidosis. Origin: acro + G. Keras, horn, + elastos, beaten, + eidos, resemblance, + -osis, condition (05 Mar 2000) |
| acrokeratosis | Overgrowth of the horny layer of the skin, usually nodular configurations, of the dorsum of the fingers and toes, and occasionally on the rim of the ear and tip of the nose. Origin: acro-+ G. Keras, horn, + -osis, condition (05 Mar 2000) |
| acrokeratosis verruciformis | <dermatology> Warty hyperkeratotic lesions that are found on the dorsal aspect of the hands and feet and on the knees and elbows. There appears to be phenotypic overlap between this and Darier-White disease and they may not be separate entities. Clinical features include: acrokeratosis, warty hyperkeratosis on the dorsal hands, feet, knees and elbows. See: benign familial pemphigus. Inheritance: autosomal dominant. (05 Aug 1998) |
| acroleic acids | A series of unsaturated aliphatic acids of the general formula R==CH-COOH; the prototype, acrylic acid (R=CH2) or 2-propenoic acid, is derived from propionic acid by reduction or from glycerol by dehydration. Synonym: acroleic acids. (05 Mar 2000) |
| acrolein | <chemistry> A limpid, colourless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating. Origin: L. Acer sharp + olere to smell. Source: Websters Dictionary (01 Mar 1998) |
| acroleukopathy | Depigmentation of the extremities. (05 Mar 2000) |
| acrolith | A statue whose extremities are of stone, the trunk being generally of wood. Origin: L. Acrolthus, Gr. With the ends made of stone; extreme + stone. Source: Websters Dictionary (01 Mar 1998) |
| acromegalia | <endocrinology> A condition that results from the excess production of growth hormone in the anterior lobe of the pituitary gland. Acromegaly is characterised by enlarged facial features, enlarged jaw, enlarged frontal bone of skull, widely spaced teeth and enlargement of the bones of the extremities. Other features include enlargement of the lips and nose, thickening of the soft tissues of the face, somnolence, moodiness and decreased libido. (13 Nov 1997) |
| acromegalic | Pertaining to or characterised by acromegaly. (05 Mar 2000) |
| acrylic |
acrylic fiber: polymerized from acrylonitrile a glassy thermoplastic; can be cast and molded or used in coatings and adhesives used especially by artists a synthetic fabric
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| acridity |
having an acrid smell extreme bitterness; "the acridity of alkali" the quality of being sharply disagreeable in language or tone
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| acridness |
acridity: extreme bitterness; "the acridity of alkali" acridity: the quality of being sharply disagreeable in language or tone
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| acrocentric chromosome |
a chromosome with the centromere near one end so that one chromosomal arm is short and one is long
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| acrodont |
an animal having teeth consolidated with the summit of the alveolar ridge without sockets
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| ACR | the outermost point of the spine of the shoulder blade |
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| ACR | abnormal protrusion of the navel |
| ACR | myotonia of the extremities only |
| ACR | a word formed from the initial letters of a multi-word name |
| ACR | characterized by the use of acronyms |
| ACR | characterized by the use of acronyms |
| ACR | (botany) of leaves or flowers |
| ACR | a morbid fear of great heights |
| ACR | suffering from acrophobia |
| ACR | naming a letter of the alphabet by using a word whose initial sound is the sound represented by that letter |
| ACR | the citadel in ancient Greek towns |
| ACR | coelenterate genus of order Madreporaria, including staghorn corals |