Trioecious \Tri*[oe]"cious\ (-sh[u^]s), a. [Pref. tri- + Gr. ?
house.] (Bot.)
Having three sorts of flowers on the same or on different
plants, some of the flowers being staminate, others
pistillate, and others both staminate and pistillate;
belonging to the order Tri[oe]cia.
[1913 Webster]