/ Dictionary / Index M missing: Meaning and Definition of Find definitions for: miss•ing Pronunciation: (mis'ing), [key] — adj. lacking, absent, or not found: a missing person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: missing (Thesaurus) missilery missing link Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language