The Collaborative International Dictionary of English v.0.48:

Biogenesis \Bi`o*gen"e*sis\, Biogeny \Bi*og"e*ny\, n. [Gr. bi`os
   life + ?, ?, birth.] (Biol.)
   (a) A doctrine that the genesis or production of living
       organisms can take place only through the agency of
       living germs or parents; -- called also biogeny; --
       opposed to abiogenesis.
   (b) Life development generally.
       [1913 Webster]

   2. the production of a chemical compound by a living
      organism.

   Syn: biosynthesis.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

biogenesis
    n 1: production of a chemical compound by a living organism
         [syn: biosynthesis, biogenesis]
    2: the production of living organisms from other living
       organisms [syn: biogenesis, biogeny]