/ Dictionary / Index A ataxia: Meaning and Definition of Find definitions for: a•tax•i•a Pronunciation: (u-tak'sē-u), [key] — n. Pathol. loss of coordination of the muscles, esp. of the extremities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ataxia (Thesaurus) atavistic ATB Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language