/ Dictionary / Index A AC and U: Meaning and Definition of Find definitions for: AC and U Pronunciation: [key] Association of Colleges and Universities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acaleph acanthaceous Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language