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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 ?
Boys and girls come out to play: the molecular biology of dioecious plants.
The reproductive strategies of Vitis species are highly variable, including dioecious, polygamous-dioic or hermaphrodite types.
The species has mainly monoecious plants but also genotypes with dioecious plants are found, a non-typical behavior in some disturbed areas.
is an annual dioecious herb belonging to the Chenopodiaceae family.
It is a difficult taxonomic group because it is dioecious and mostly deciduous, and the leaves are often absent from flowering or fruiting specimens.
Native muscadines are dioecious, which means that male and female flowers are on separate plants.
The tree is dioecious (with male and female cones on separate individuals), so to obtain the berries used in herbal medicine, you must grow both sexes.
transtagana Franco), the Portuguese Prickly Juniper, is a dioecious shrub from Cupressaceae family (Franco, 1986) endemic to SW Iberian Peninsula.
hawthorn Like hollies, they are both usually dioecious, needing both male and female to ensure berries.
The plants are predominantly dioecious, with pistillate plants bearing only female flowers and staminate plants developing only male flowers (Figs.