(especially of plants) having the male and female organs in separate and distinct individuals; having separate sexes.
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- di·oe·cious·ly, adverb
- di·oe·cious·ness, noun
- di·oe·cism [dahy-ee-siz-uhm], /daɪˈi sɪz əm/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use dioecious in a sentence
Grapes are not to-day considered dioecious but polygamo-dioecious, a distinction which will be defined later.The Grapes of New York | U. P. Hedrick
Again, in the case of dioecious trees, only the female or pistillate bear fruit.Michigan Trees | Charles Herbert Otis
If I am right, it is very advisable not to use the term "dioecious," as this at once brings notions of separation of sexes.The Life and Letters of Charles Darwin, Volume II (of II) | Charles Darwin
The flowers are dioecious, rarely monoecious, provided with one or two perianths.
The flowers have no petals and are polygamous or dioecious (male, female and hermaphrodite flowers occur).
British Dictionary definitions for dioecious
(of some plants) having the male and female reproductive organs in separate flowers on separate plants: Compare monoecious
- dioeciously, dieciously or dioicously, adverb
- dioeciousness, dieciousness or dioicousness, noun
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
Scientific definitions for dioecious
Having male flowers on one plant and female flowers on another plant of the same species. The holly and asparagus plants are dioecious. Compare monoecious.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.