/ Dictionary / Index A augmenter: Meaning and Definition of Find definitions for: aug•ment•er Pronunciation: (ôg-men'tur), [key] — n. a person or thing that augments. any auxiliary device, as an afterburner, for additional thrust from the exhaust of a jet or rocket engine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. augmented sixth au gratin Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language