Source : Webster's Revised Unabridged Dictionary (1913)

Organogenesis \Or`ga*no*gen"e*sis\, n. [Organo- + genesis.]
   1. (Biol.) The origin and development of organs in animals
      and plants.

   2. (Biol.) The germ history of the organs and systems of
      organs, -- a branch of morphogeny. --Haeckel.