/ Dictionary / Index A airtight: Meaning and Definition of Find definitions for: air•tight Pronunciation: (âr'tīt"), [key] — adj. preventing the entrance or escape of air or gas. having no weak points or openings of which an opponent may take advantage: an airtight contract. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: airtight (Thesaurus) air tee airtime Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language