Dioecia \Di*[oe]"ci*a\ (d[-i]*[=e]"sh[i^]*[.a]), n. pl. [NL.,
fr. Gr. di = di`s twice + o'i^kos a house.]
1. (Bot.) A Linn[ae]an class of plants having the stamens and
pistils on different plants.
[1913 Webster]
2. (Zool.) A subclass of gastropod mollusks in which the
sexes are separate. It includes most of the large marine
species, like the conchs, cones, and cowries. Dioecian