Source : Webster's Revised Unabridged Dictionary (1913)

Adduction \Ad*duc"tion\, n. [Cf. F. adduction. See {Adduce}.]
   1. The act of adducing or bringing forward.

            An adduction of facts gathered from various
            quarters.                             --I. Taylor.

   2. (Physiol.) The action by which the parts of the body are
      drawn towards its axis]; -- opposed to {abduction}.
      --Dunglison.

Source : WordNet®

adduction
     n : (physiology) moving of a body part toward the central axis
         of the body