/ Dictionary / Index A acalculia: Meaning and Definition of Find definitions for: a•cal•cu•li•a Pronunciation: (ā"kal-ky'lē-u), [key] — n. Psychiatry. inability or loss of the ability to perform arithmetic operations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acajou acaleph 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