/ Dictionary / Index P portulaca: Meaning and Definition of Find definitions for: por•tu•lac•a Pronunciation: (pôr"chu-lak'u, pōr"-), [key] — n. any of various fleshy-leaved plants of the genus Portulaca, esp. P. grandiflora, widely cultivated for its showy, variously colored flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: portulaca (Thesaurus) Portuguese West Africa portulacaceous Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language