/ Dictionary / Index P preflight: Meaning and Definition of Find definitions for: pre•flight Pronunciation: (prē-flīt'), [key] — adj. occurring or done before a flight: a preflight briefing of the plane's crew. —n. a preflight briefing or a ground check, as of an airplane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prefix preform 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