| AOA | American Osteopathic Association; Administration on Aging; Alpha Omega Alpha Honor Society; American... |
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| CTA | Canadian Tuberculosis Association; chemotactic activity; chromotropic acid; Committee on Thrombolyti... |
| ITA | inferior temporal artery; internal thoracic artery; International Tuberculosis Association |
| NCA | National Certification Agency; National Council on Aging; National Council on Alcoholism; neurocircu... |
| NPF | nasopharyngeal fiberscope; National Parkinson Foundation; National Pharmaceutical Foundation; Nation... |
| association neurosis | A neurosis in which association of ideas causes mental repetition of an experience. (05 Mar 2000) |
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| association system | Groups or tracts of nerve fibres interconnecting different regions of one and the same major subdivision of the central nervous system, such as the various areas of the cerebral cortex or the various segments of the spinal cord. (05 Mar 2000) |
| association test | A word (stimulus word) is spoken to the subject, who is to reply immediately with another word (reaction word) suggested by the first; used as a diagnostic aid in psychiatry and psychology, clues being given by the length of time (association time) between the stimulus and reaction words, and also by the nature of the reaction words. (05 Mar 2000) |
| association time | Time elasping between a stimulus and the verbalised response to it. (05 Mar 2000) |
| association tract | See: association system. (05 Mar 2000) |
| genetic association | The occurrence together in a population, more often than can be readily explained by chance, of two or more traits of which at least one is known to be genetic. (05 Mar 2000) |
| clang association | Psychic association's resulting from sounds; often encountered in the manic phase of manic-depressive psychosis. (05 Mar 2000) |
| plant association | A grouping of plant species, or a plant community, that recurs across the landscape. Plant associations are used as indicators of environmental conditions such as temperature, moisture, light, etc. (05 Dec 1998) |
| word association tests | Lists of words to which individuals are asked to respond ascertaining the conceptual meaning held by the individual. (12 Dec 1998) |
| New York Heart Association classification | A functional classification to assess cardiovascular disability. Class I: patients with cardiac disease without limitation of physical activity. Ordinary activity does not cause symptoms. Class II: patients with cardiac disease with slight limitation of activity; comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea or angina. Class III: patients with cardiac disease producing marked limitation of activity: comfortable at rest. Less than ordinary physical activity causes symptoms. Class IV: patients with cardiac disease resulting in inability to carry on any physical activity without discomfort. Symptoms may be present even at rest. (05 Mar 2000) |
| free association | Spontaneous verbalization of whatever comes to mind. (12 Dec 1998) |
| laws of association | Principles formulated by Aristotle to account for the functional relationships between ideas; the law of contiguity (association) proved most useful to experimental psychologists, culminating in modern studies of respondent conditioning. (05 Mar 2000) |
| loosening of association | A manifestation of a severe thought disorder characterised by the lack of an obvious connection between one thought or phrase and the next, or with the response to a question. (05 Mar 2000) |
| acute miliary tuberculosis | A rapidly fatal disease due to the general dissemination of tubercle bacilli in the blood, resulting in the formation of miliary tubercles in various organs and tissues, and producing symptoms of profound toxaemia. Synonym: acute miliary tuberculosis, disseminated tuberculosis. (05 Mar 2000) |
| acute tuberculosis | A rapidly fatal disease due to the general dissemination of tubercle bacilli in the blood, resulting in the formation of miliary tubercles in various organs and tissues, and producing symptoms of profound toxaemia. Synonym: acute miliary tuberculosis, disseminated tuberculosis. (05 Mar 2000) |