nosology nosologist • nosomania · · · Info · Definitions · Synonyms · Characters · · nosology · · Text Latin · · Script 8 · · Length Definitions · · · (noun) the branch of medical science dealing with the classification of disease. Synonyms: diagnostics. · · Noun Definition 1 Synonyms · · · diagnostics · · Synonym 1 Characters · · g latin small letter g U+0067 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 y latin small letter y U+0079