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dioecious Syllabification: di·oe·cious
Pronunciation: /dīˈēSHəs/

Definition of dioecious in English:


(Of a plant or invertebrate animal) having the male and female reproductive organs in separate individuals. Compare with monoecious.
Example sentences
  • Lloyd and Webb suggested that if females of dioecious species allocated a greater proportion of their available energy to reproduction than males, then females should be slower growing and have lower survival rates.
  • Consider a population of dioecious species, in which males mate randomly with females.
  • We compared the phyllotaxy and characteristics of the vascular system for two of the dioecious species (subgenus Acnida).


Pronunciation: /ˈdīˌēsē/
Example sentences
  • In addition, the general term ‘population structure’ encompasses dioecy, ploidy level, age structure, reproductive patterns such as partial selfing, as well as the various forms of geographical structure and dispersal.
  • S. latifolia has recently become a popular model to study dioecy and evolution of plant sex chromosomes.
  • Sagittaria is one such taxon enabling studies of the evolution of dioecy from monoecy.


Mid 18th century: from modern Latin Dioecia (a class in Linnaeus's sexual system), from di-1 'two' + Greek -oikos 'house'.

Definition of dioecious in:
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