/ Dictionary / Index B bombacaceous: Meaning and Definition of Find definitions for: bom•ba•ca•ceous Pronunciation: (bom"bu-kā'shus), [key] — adj. belonging to the Bombacaceae, the bombax family of plants. Cf. bombax family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bomb bombard Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language