Ataxic \A*tax"ic\, a. [Cf. F. ataxique. See Ataxia.]

(Med.) Characterized by ataxy, that is,
   (a) by great irregularity of functions or symptoms, or
   (b) by a want of coordinating power in movements.

Ataxic fever, malignant typhus fever. --Pinel.

Source: Webster's Revised Unabridged Dictionary (1913)