Origin of dioecious; from di- + Classical Greek oikos, a house (see eco-) + -ous
Origin of dioeciousFrom New Latin Dioecia, former class name : di–1 + Greek oikia, a dwelling; see weik-1 in Indo-European roots.
This term is mainly used of species in the plant kingdom. The corresponding term in zoology is gonochoristic.
di- + -oecious