The Collaborative International Dictionary of English v.0.48:

Henoge ny \He*nog"e* ny\, Henogenesis \Hen`o*gen"e*sis\, n. [Gr.
   e"i`s, masc., "e`n, neut., one + root of ? to be born.]
   (Biol.)
   Same as Ontogeny.
   [1913 Webster]