/ Dictionary / Index P portulacaceous: Meaning and Definition of Find definitions for: por•tu•la•ca•ceous Pronunciation: (pôr"chu-lu-kā'shus, pōr"-), [key] — adj. belonging to the Portulacaceae, the purslane family of plants. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. portulaca Port Washington Related Content Daily Word Quiz: pugilist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language