Meaning of transformism

trans•form•ism

Pronunciation: (trans-fôr'miz-um), [key]
— n. Biol.
  1. the doctrine of gradual transformation of one species into another by descent with modification through many generations.
  2. such transformation itself.
  3. any doctrine or instance of evolution.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.