The Collaborative International Dictionary of English v.0.48:

Adduction \Ad*duc"tion\, n. [Cf. F. adduction. See Adduce.]
   1. The act of adducing or bringing forward.
      [1913 Webster]

            An adduction of facts gathered from various
            quarters.                             --I. Taylor.
      [1913 Webster]

   2. (Physiol.) The action by which the parts of the body are
      drawn towards its axis]; -- opposed to abduction.
      --Dunglison.
      [1913 Webster]

WordNet (r) 3.0 (2006):

adduction
    n 1: (physiology) moving of a body part toward the central axis
         of the body

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "adduction":
   affinity, allurement, attractance, attraction, attractiveness,
   attractivity, capillarity, capillary attraction, centripetal force,
   drag, draw, gravitation, gravity, magnetism, mutual attraction,
   pull, pulling power, sympathy, traction, tug