/ Dictionary / Index A au gratin: Meaning and Definition of Find definitions for: au grat•in Pronunciation: (ō grät'n, ō grat'n, ô grät'n, ô grat'n Fr. ō gra&sylptan'), [key] — Cookery. Cookery. cooked or baked with a topping of either browned bread crumbs and butter or grated cheese, or with both. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. augmenter Augsburg Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language