trioecious

Alternative forms

 * triecious
 * triœcious

Adjective

 * 1)  Having male (staminate), female (pistillate), and bisexual flowers on the same plant (also known as "polygamous"), like
 * 2)  Belonging to the former Linnæan order Trioecia, consisting of plants of this type.
 * 3)  Having three sexes: male, female and hermaphrodite, as some nematodes.