/ Dictionary / Index P pray-in: Meaning and Definition of Find definitions for: pray-in Pronunciation: (prā'in"), [key] — n. a form of social protest in which demonstrators engage in passive resistance and prayer: popular esp. in the 1970s. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prayer wheel praying mantis Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language