trioecious /traɪˈiːʃ(ɪ)əs/ adjective3 •Having male (staminate), female (pistillate), and bisexual flowers on the same plant (also known as "polygamous"), like Fraxinus excelsior •Having three sexes: male, female and hermaphrodite, as some nematodes. •(no longer used) Belonging to the former Linnaean order Trioecia, consisting of plants of this type.
