Origin of trioecious; from tri- + Late Latin oecus, a room (; from Classical Greek oikos, a house: see eco-) + -ous
Part or all of this entry has been imported from the 1913 edition of Websterâ€™s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
tri- + Ancient Greek [script?] house.