/ Dictionary / Index P poinciana: Meaning and Definition of Find definitions for: poin•ci•an•a Pronunciation: (poin"sē-an'u), [key] — n. See any of several other tropical trees of the legume family, with showy flowers, as Caesalpina pulcherrimaor Peltophorum pterocarpum Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: poinciana (Thesaurus) Poincaré conjecture poinsettia Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language