etiology etiologue • etiophyllin · · · Info · Definitions · Synonyms · Characters · · etiology · · Text Latin · · Script 8 · · Length 4 · · Syllables Definitions · · · (noun) the cause of a disease. Synonyms: aetiology. · · Noun Definition 1 (noun) the philosophical study of causation. Synonyms: aetiology. · · Noun Definition 2 Synonyms · · · aetiology · · Synonym 1 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F t latin small letter t U+0074 y latin small letter y U+0079