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