/ Dictionary / Index P Pentecost: Meaning and Definition of Find definitions for: Pen•te•cost Pronunciation: (pen'ti-kôst", -kost"), [key] — n. a Christian festival celebrated on the seventh Sunday after Easter, commemorating the descent of the Holy Ghost upon the apostles; Whitsunday. Shavuoth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pentecost (Thesaurus) pentazocine Pentecostal Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language