/ Dictionary / Index P poriferan: Meaning and Definition of Find definitions for: po•rif•er•an Pronunciation: (pô-rif'ur-un, pō-, pu-), [key] — n. any animal of the phylum Porifera, comprising the sponges. —adj. belonging or pertaining to the Porifera. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: poriferan (Thesaurus) Porifera poriferous Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language