Source : Webster's Revised Unabridged Dictionary (1913)

Ideo-motor \I`de*o-mo"tor\, a. [Ideo- + motor.] (Physiol.)
   Applied to those actions, or muscular movements, which are
   automatic expressions of dominant ideas, rather than the
   result of distinct volitional efforts, as the act of
   expressing the thoughts in speech, or in writing, while the
   mind is occupied in the composition of the sentence.
   --Carpenter.