unisexuality

unisexual

[yoo-nuh-sek-shoo-uhl]
adjective
1.
of or pertaining to one sex only.
2.
having only male or female organs in one individual, as an animal or a flower.

Origin:
1795–1805; uni- + sexual

unisexuality, noun
unisexually, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To unisexuality
Collins
World English Dictionary
unisexual (ˌjuːnɪˈsɛksjʊəl)
 
adj
1.  of or relating to one sex only
2.  (of some organisms) having either male or female reproductive organs but not both
 
unisexu'ality
 
n
 
uni'sexually
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
unisexual   (y'nĭ-sěk'sh-əl)  Pronunciation Key 
  1. Having the sex organs of only one sex; not hermaphroditic. Used of organisms.

  2. Having stamens and pistils in separate flowers borne on the same plant; diclinous. Used of flowers.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Britannica
Encyclopedia

unisexuality

in biology, the condition of an organism or species capable of producing only male or female gametes (sex cells) but never both. A unisexual organism of a bisexual species is one in which the male and female gonads are found in separate individuals. In plants this condition is often called dioecism. A unisexual species is one in which all individuals are of the same sex. Some species of whiptail lizards, for example, are only female. New individuals grow from eggs that develop without fertilization (parthenogenesis).

Learn more about unisexuality with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature