/ Dictionary / Index M moisture: Meaning and Definition of Find definitions for: mois•ture Pronunciation: (mois'chur), [key] — n. condensed or diffused liquid, esp. water: moisture in the air. a small quantity of liquid, esp. water; enough liquid to moisten. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: moisture (Thesaurus) moisten moisturize Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language