What is "trioecious"

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.

a. (context botany English) Having three sorts of flower on the same or on different plants, some of the flowers being staminate, others pistillate, and others both; belonging to the order Tricia.