/ Dictionary / Index M moving average: Meaning and Definition of Find definitions for: mov'ing av'erage Pronunciation: [key] one of a succession of averages of data from a time series, where each average is calculated by successively shifting the interval by the same period of time. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. moving moving picture Related Content Daily Word Quiz: maritime Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language