The Collaborative International Dictionary of English v.0.48:

Transduction \Trans*duc"tion\, n. [L. transducere, traducere,
   -dictum, to lead across or over. See Traduce.]
   The act of conveying over. [R.] --Entick.
   [1913 Webster]

WordNet (r) 3.0 (2006):

transduction
    n 1: (genetics) the process of transfering genetic material from
         one cell to another by a plasmid or bacteriophage
    2: the process whereby a transducer accepts energy in one form
       and gives back related energy in a different form; "the
       transduction of acoustic waves into voltages by a microphone"