/ Dictionary / Index M middle-age spread: Meaning and Definition of Find definitions for: mid'dle-age spread' Pronunciation: (mid'l-āj"), [key] an increase in bulk, esp. in the waist and buttocks, associated with the onset of middle age and the body's decreasing ability to metabolize calories efficiently. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Middle Ages Middle America Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language