e·ti·ol·o·gy also ae·ti·ol·o·gy (  t- l  -j)n. pl. e·ti·ol·o·gies also ae·ti·ol·o·gies 1. a. The study of causes or origins. b. The branch of medicine that deals with the causes or origins of disease. 2. a. Assignment of a cause, an origin, or a reason for something. b. The cause or origin of a disease or disorder as determined by medical diagnosis. [Late Latin aetiologia, from Greek aitiologi  : aiti, cause + -logi, -logy.]e ti·o·logic (--lj k), eti·o·logi·cal adj.e ti·o·logi·cal·ly adv.e ti·olo·gist n. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Adj. | 1. | etiological - of or relating to the philosophical study of causation |
| 2. | etiological - relating to the etiology of a disease; "etiological agent" |
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