trisexual adjective 2noun 2forms 1 adjective2 •Having, or pertaining to a system which involves, three sexes.Whether three sexes could exist in this contexture, or whether a trisexual organism would be quite different from the organisms we know, it is impossible to say. — 1937 •(offensive, humorous) Of a person, willing to "try anything" sexually."I was told he's trisexual." "Quit it!" Alice laughed. "There's no such thing as trisexual." "I guess you don't read the new books, dearie. That's someone who'll try anything." Alice held her nose. — 1944 noun2 •One who is trisexual. •An organism (that is, a species) which has three sexes. formstrisexuals
