[yoo-nuh-sek-shoo-uh l]


of or relating to one sex only.
having only male or female organs in one individual, as an animal or a flower.

Nearby words

  1. unisa,
  2. uniseptate,
  3. uniserial,
  4. uniseriate,
  5. unisex,
  6. unisize,
  7. unison,
  8. unisonous,
  9. unispiral,
  10. unit

Origin of unisexual

First recorded in 1795–1805; uni- + sexual

Related formsu·ni·sex·u·al·i·ty, nounu·ni·sex·u·al·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for unisexuality



of or relating to one sex only
(of some organisms) having either male or female reproductive organs but not both
Derived Formsunisexuality, noununisexually, adverb

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

Science definitions for unisexuality



Having the sex organs of only one sex; not hermaphroditic. Used of organisms.
Having stamens and pistils in separate flowers borne on the same plant; diclinous. Used of flowers.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.