The Collaborative International Dictionary of English v.0.48:

Autogenous \Au*tog"e*nous\, a. [Gr. ?; ? self + root of ? to be
   born.]
   1. (Biol.) Self-generated; produced independently.
      [1913 Webster]

   2. (Anat.) Developed from an independent center of
      ossification. --Owen.
      [1913 Webster]

   3. a. Autogenetic.
      [Webster 1913 Suppl.]

   Autogenous soldering, the junction by fusion of the joining
      edges of metals without the intervention of solder.
      [1913 Webster]

WordNet (r) 3.0 (2006):

autogenous
    adj 1: originating within the body [syn: autogenous,
           autogenic] [ant: heterogeneous, heterogenous]