| asymbolia | A form of aphasia in which the significance of signs and symbols is not appreciated. Synonym: sight blindness. Synonym: asemasia, asaemia. Origin: G. A-priv. + symbolon, an outward sign (05 Mar 2000) |
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| asymmetric | Not symmetrical; denoting a lack of symmetry between two or more like parts. (05 Mar 2000) |
| asymmetric centre | <chemistry> Same as a chiral centre, a tetrahedral carbon atom that bears four different substituents. (09 Jan 1998) |
| asymmetric disulfide | <chemistry> Disulfide which is not symmetric on both sides of the -s-s- linkage; e.g., the disulfide formed between coenzyme A and glutathione or between cysteine and coenzyme A or glutathione. Synonym: asymmetric disulfide. (05 Mar 2000) |
| asymmetric motor neuropathy | Neuropathy in which the loss of function is more marked in the extremities of one side of the body, old term for diabetic polyradiculopathy. (05 Mar 2000) |
| asymmetrical chondrodystrophy | Benign growths of cartilage in the metaphyses of several bones. (12 Dec 1998) |
| asymmetry | 1. Want of symmetry, or proportion between the parts of a thing, especially. Want of bilateral symmetry. 2. <mathematics> Incommensurability. Origin: Gr.; priv. + symmetry. Source: Websters Dictionary (01 Mar 1998) |
| asymptomatic | <symptom> Without obvious signs or symptoms of disease. Cancer may cause symptoms and warning signs, but, especially in its early stages, cancer may develop and grow without producing any symptoms. (14 May 1997) |
| asymptomatic coccidioidomycosis | A form of coccidioidomycosis not differentiated clinically from upper respiratory infections of viral or bacterial aetiology; positive skin tests are useful in demonstrating past and present infections; tests for circulating serum antibodies are prognostic as well as diagnostic in some cases. Synonym: asymptomatic coccidioidomycosis. (05 Mar 2000) |
| asymptomatic neurosyphilis | Clinically inapparent (except for possible abnormal pupils) syphilitic meningeal infection, diagnosed by examination of the cerebrospinal fluid; if untreated, often develops into some form of symptomatic neurosyphilis. (05 Mar 2000) |
| asymptote | <mathematics> A line which approaches nearer to some curve than assignable distance, but, though infinitely extended, would never meet it. Asymptotes may be straight lines or curves. A rectilinear asymptote may be conceived as a tangent to the curve at an infinite distance. Origin: Gr. Not falling together; priv. + to fall together; with + to fall. Cf. Symptom. Source: Websters Dictionary (01 Mar 1998) |
| asymptotic | Pertaining to a limiting value, for example of a dependent variable, when the independent variable approaches zero or infinity. (05 Mar 2000) |