/ Dictionary / Index A acta: Meaning and Definition of Find definitions for: ac•ta Pronunciation: (ak'tu), [key] — n.pl. official records, as of acts, deeds, proceedings, transactions, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. act actable Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language