/ Dictionary / Index M mansion: Meaning and Definition of Find definitions for: man•sion Pronunciation: (man'shun), [key] — n. a very large, impressive, or stately residence. See Often,a large building with many apartments; apartment house. each of 28 divisions of the ecliptic occupied by the moon on successive days. an abode or dwelling place. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mansion (Thesaurus) Mansi man-sized 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