/ Dictionary / Index P pyrocellulose: Meaning and Definition of Find definitions for: py•ro•cel•lu•lose Pronunciation: (pī"ru-sel'yu-lōs"), [key] — n. cordite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pyrocellulose (Thesaurus) pyrocatechol pyrochemical Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language