- metamorphosis
- 1533, "change of form or shape, especially by witchcraft," from L., from Gk. metamorphosis "a transforming," from metamorphoun "to transform," from meta- "change" (see meta-) + morphe "form" (see morphine). Metamorphic, in geological sense, is first attested 1833, in Lyell; rocks whose form has been changed by heat or pressure.