English [ edit ]
Etymology [ edit ]
Blend of + ambidextrous . sex
Adjective [ edit ]
ambisextrous ( comparative , more ambisextrous superlative ) most ambisextrous
( humorous , sometimes offensive , of a person ) Bisexual.
2003 July 6, Gormley, Gerard, If This Is Insanity, Count Me In, iUniverse, , ISBN 9781469739502 , OL 10707250M page 143:
“One of those what?” “You know, ambisextrous.” “Let's just say Faith loves beauty, whatever its form.”
2007 May 1, Stern, Keith, “Tallulah Bankhead”, in , Lulu, Queers in History: The Comprehensive Encyclopedia of Historical Gays, Lesbians, Bisexuals, and Transgenders , ISBN 9781847283481 : OL 11916511M
She had numerous heterosexual affairs but considered herself “ ambisextrous.”
1984, Robbins, Stanley Leonard; Ramzi S. Cotran, Vinay Kumar, Pathologic Basis of Disease , Third edition, W. B. Saunders,  , ISBN 9780721675978 , page 1154: OL 3177899M
The embryogenesis of such male-directed stromal cells remains a puzzle, and it can be only theorized that it represents masculine differentiation of the mesenchyme derived from the embryonic “ ambisextrous” primitive gonads.
2003 May 22, Gill, Denis; Niall O'Brien, Paediatric Clinical Examinations Made Easy, Churchill Livingstone, , ISBN 9780443073175 : OL 10259342M
Throughout the text the terms ‘he’, ‘him’, ‘his’, should be taken to be ‘ ambisextrous’ and to refer to ‘him’ and ‘her’. Having both male and female, or masculine and feminine elements.
1920, Ezra Pound, “Genesis, or, The First Book in the Bible”, reprinted in Pavannes and Divagations, New Directions Publishing (1974), ISBN 978-0-8112-0575-7, page 171:
One searches to see whether the author [of “He created them male and female”,
Genesis 5:2] meant to say that man was at the start ambisextrous [… ]
1921 November 19, Richard Matthews Hallet, “The Canyon of the Fools”, in The Saturday Evening Post , volume 194, number 2, page 55: 
“So you think, wonderful woman; but you're so utterly unlike your sisters in that particular. You're ambisextrous, do you know that?”
a. 1922, “Adolf Smith” (pseudonym), quoted in Dudley Ward Fay, “Adolf, a Modern Edipus”, in The Psychoanalytic Review, Volume IX Number 3 (July 1922), page 281:
My signature with either hand is the same. I’m ambidextrous,
ambisextrous. I’m intermediate sex.