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aprax-ia \(ï)a-'prak-se- \n [NL, fr. Gk, inaction, fr. a-+ praxis action, fr. prassein to do -- more at PRACTICAL] : loss or impairment of the ability to execute complex coordinated movements - aprac-tic \-'prak-tik\ or apraxic \-'prak-sik\ adj.