phaeo·spo·re·ae \ˌfēəˈspōrēˌē\noun plural Usage: capitalized Etymology: New Latin, from phaeo- + spora spore + -eae in some classifications: an order or other group of brown algae characterized by the production of asexual swarm spores and usually comprising all the Phaeophyceae except the Dictyotales and Fucales — compare cyclosporea • phaeo·spor·ous\| ̷ ̷ ̷ ̷|spōrəs, (ˈ)fē|äspərəs\adjective