| etio- | 1. Prefix used with (for example) cholane to indicate replacement of the C-17 side chain by H; thus, etiocholane is the 5b isomer of androstane. 2. Combining form meaning cause. Origin: G. Aitia, cause (05 Mar 2000) |
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| etiocholanolone | <chemical> 3-alpha-hydroxy-5-beta-androstan-17 one. A ketosteroid of mainly human origin; causes fever, immunostimulation and leukocytosis; used to evaluate adrenal cortex function, bone marrow performance and in neoplastic disease for immunostimulation. Synonym: 5-isoandrosterone. Chemical name: Androstan-17-one, 3-hydroxy-, (3alpha,5beta)- (12 Dec 1998) |
| etiogenic | Of a causal nature. Origin: G. Aitia, cause, + genesis, production (05 Mar 2000) |
| etiolate | 1. To become white or whiter; to be whitened or blanched by excluding the light of the sun, as, plants. 2. <medicine> To become pale through disease or absence of light. Origin: F. Etioler to blanch. 1. To blanch; to bleach; to whiten by depriving of the sun's rays. 2. <medicine> To cause to grow pale by disease or absence of light. Source: Websters Dictionary (01 Mar 1998) |
| etiolation | <botany> Growth habit adopted by germinating seedlings in the dark. Involves rapid extension of shoot and/or hypocotyl and suppression of chlorophyll formation and leaf growth. (18 Nov 1997) |
| etiology | <study> A branch of knowledge concerned with the causes of particular phenomena, specifically a branch of medical science concerned with the causes and origins of diseases. The study of factors of causation or those associated with the causation of disease or abnormal body states. Origin: L. Aetiologia, Gr. Aitiologia. (09 Feb 1998) |
| etiopathic | Relating to specific lesions concerned with the cause of a disease. Origin: G. Aitia, cause, + pathos, disease (05 Mar 2000) |
| etiopathology | Consideration of the cause of an abnormal state or finding. Origin: G. Aitia, cause, + pathology (05 Mar 2000) |
| etioplast | <plant biology> Form of plastid present in plants grown in the dark. Lacks chlorophyll, but contains chlorophyll precursors and can develop into a functional chloroplast in the light. (18 Nov 1997) |
| etioporphyrin | A porphyrin derivative characterised by the presence on each of the four pyrrole rings of one methyl group and one ethyl group; four isomeric forms are thus possible. (05 Mar 2000) |
| etioporphyrins | Porphyrins with four methyl and four ethyl side chains attached to the pyrrole rings. (12 Dec 1998) |
| etiotropic | Directed against the cause; denoting a remedy that attenuates or destroys the causal factor of a disease. Origin: G. Aitia, cause, + trope, a turning (05 Mar 2000) |