'Dioecia' definitions:

Definition of 'Dioecia'

From: GCIDE

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