资料来源 : pyDict

后成,渐成说

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Epigenesis \Ep`i*gen"e*sis\, n. [Pref. epi- + genesis.] (Biol.)
   The theory of generation which holds that the germ is created
   entirely new, not merely expanded, by the procreative power
   of the parents. It is opposed to the theory of evolution,
   also to syngenesis.

资料来源 : WordNet®

epigenesis
     n : a geological change in the mineral content of rock after the
         rock has formed