/ Dictionary / Index P pulp chamber: Meaning and Definition of Find definitions for: pulp' cham"ber Pronunciation: [key] — Dentistry. Dentistry. the crown portion of the pulp cavity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pulp cavity pulpectomy Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language