family Bombacaceae fa·mi·ly·bombacaceae uncommon noun 1. tropical trees with large dry or fleshy fruit containing usually woolly seeds SynonymsBombacaceaefamily Bombacaceae Related words Broader terms dilleniid dicot family Parts Malvales Part of BombaxAdansoniaCeibaDuriogenus MontezumaOchromaPseudobombax WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.