metamorphology|mɛtəmɔːˈfɒlədʒɪ| [f. metamorpho-sis + -logy.] The scientific study of the post-embryonic metamorphosis of animals. 1879tr.Haeckel's Evol.Man. II. 460 Later [i.e. post-embryonic] changes form the subject of the science of Metamorphoses, or Metamorphology.