Breadcrumb Home > Dictionary > Index A acme: Meaning and Definition of Find definitions for: ac•me Pronunciation: (ak'mē), [key] — n. the highest point; summit; peak: The empire was at the acme of its power. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: acme (Thesaurus) ACLU acmeism ✖ Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language