Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


also di·e·cious  (dī-ē′shəs)
Biology Having the male and female reproductive organs, especially flowers, on different individuals.

[From New Latin Dioecia, former class name : di- + Greek oikiā, a dwelling; see weik- in Indo-European roots.]

di·oe′cism (-sĭz′əm) n.
di′oe′cy (-sē) n.


(daɪˈiːʃəs) or




(Botany) (of some plants) having the male and female reproductive organs in separate flowers on separate plants. Compare monoecious
[C18: from New Latin Dioecia name of class, from di1 + Greek oikia house, dwelling]
diˈoeciously, diˈeciously, diˈoicously adv
diˈoeciousness, diˈeciousness, diˈoicousness n


or di•e•cious

(daɪˈi ʃəs)

(esp. of plants) having the male and female organs in separate and distinct individuals; having separate sexes.
[1740–50; < New Latin Dioeci(a) a Linnaean class of plants having this feature]
di•oe′cious•ly, adv.
di•oe′cious•ness, n.
di•oe′cism (-sɪz əm) n.


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.


A term that indicates that male and female flowers are produced on separate plants.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.dioecious - having male and female reproductive organs in separate plants or animals
monecious, monoecious, monoicous - having male and female reproductive organs in the same plant or animal
References in periodicals archive ?
hawthorn Like hollies, they are both usually dioecious, needing both male and female to ensure berries.
It is a dioecious partial spawner and fertilization is external.
The plants are predominantly dioecious, with pistillate plants bearing only female flowers and staminate plants developing only male flowers (Figs.
are dioecious, with females simply maturing at a larger size/older age and dominating the larger size classes, the issue of Allee effects does not change.
It is dioecious [26], a diploid (2n=2x=36) [34], and the predicted genome size is estimated to be approximately between 550 and 650 Mbp [9].
A native of Japan and China, this evergreen shrub with simple, aromatic leaves and terminal panicles of small white or yellowish flowers is known as dioecious, which just means that you need a male and female plant in order to have any berries, rather like holly bushes.
They are dioecious, with male and female plants that produce pollen and fruits, respectively (Hawksworth and Wiens, 1996).
Female-directed dispersal and facilitation between tropical mistletoe and a dioecious host.
Therapeutic landscapes studies are evoked by describing the utilization of a locally available and readily cultivatable dioecious herb in medical practices in Washington State and by describing relevant place-based characteristics at a site of delivery.