diathesis diathesic • diathetic · · · Info · Definitions · Characters · · diathesis · · Text Latin · · Script 9 · · Length Definitions · · · (noun) constitutional predisposition to a particular disease or abnormality. · · Noun Definition 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 s latin small letter s U+0073 t latin small letter t U+0074