Polybotrya po·ly·bot·rya uncommon noun 1. tropical American ferns; usually terrestrial when young but scandent later Synonymsgenus PolybotryaPolybotriagenus Polybotria Related words Word family Polybotrya cervina Broader terms fern genus Parts Dryopteridaceae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.