/ Dictionary / Index O outer product: Meaning and Definition of Find definitions for: out'er prod'uct Pronunciation: [key] — Math. Math. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. outer planet outersole Related Content Daily Word Quiz: meritocracy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language