The Collaborative International Dictionary of English v.0.48:

Osteogenesis \Os`te*o*gen"e*sis\, Osteogeny \Os`te*og"e*ny\, n.
   [Osteo- + genesis, or the root of Gr. gi`gnesqai to be born:
   cf. F. ost['e]og['e]nie.] (Physiol.)
   The formation or growth of bone.
   [1913 Webster]