Dictionary.com
definitions

ambisexual

[am-bi-sek-shoo-uh l]

adjective, noun

bisexual(defs 2, 4).

Origin of ambisexual

First recorded in 1935–40; ambi- + sexual
Related formsam·bi·sex·u·al·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for ambisexual

ambisexual

adjective

biology relating to or affecting both the male and female sexes
Also: ambosexual bisexual
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for ambisexual
adj.

"unisex" (of clothing), also "bisexual," 1938 (ambisexuality is recorded from 1924), from ambi- + sexual. As a humorous coinage based on ambidextrous, ambisextrous is recorded from 1929.

Online Etymology Dictionary, © 2010 Douglas Harper
ambisexual in Medicine

ambisexual

[ăm′bĭ-sĕk′shōō-əl]

adj.

Bisexual.

n.

An ambisexual person or organism.
Related formsam′bi•sex′u•al′i•ty (-ăl′ĭ-tē) n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.