/ Dictionary / Index A A1c: Meaning and Definition of Find definitions for: A1c Pronunciation: [key] airman, first class. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. afire AFL Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language