vitamin a2 vitamin a1 • vitamin b · · · Info · Definitions · Synonyms · Characters · · vitamin a2 · · Text Common · · Latin · · Scripts 10 · · Length 4 · · Syllables Definitions · · · (noun) a viscous alcohol that is less active in mammals than is vitamin A1. Synonyms: vitamin A2, dehydroretinol. · · Noun Definition 1 Synonyms · · · dehydroretinol · · Synonym 1 Characters · · space U+0020 2 digit two U+0032 a latin small letter a U+0061 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E t latin small letter t U+0074 v latin small letter v U+0076