cosexual adjective 2noun 1forms 1 adjective2 •Producing both pollen and ovules. •Being able to reproduce as both female and male. noun1 •A cosexual organism.First, many plants that appear to change sex are really sequential or alternating cosexuals; the oil palm, Elaeis guineensis (220), and com, Zea mays (173), are examples[…] — 1982 formscosexuals