diol dioicous • diolefin · · · Info · Definitions · Synonyms · Characters · · diol · · Text Latin · · Script 4 · · Length 1 · · Syllables Definitions · · · (noun) any of a class of alcohols having 2 hydroxyl groups in each molecule. Synonyms: glycol, dihydric alcohol. · · Noun Definition 1 Synonyms · · · glycol · · Synonym 1 dihydric alcohol · · Synonym 2 Characters · · d latin small letter d U+0064 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F