We don't have synonyms for metamorphotic yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are metamorphosis, metamorphic and metamorphosic.
(adj) :
having been structurally altered as a result of, or resulting from, exposure to intense heat &/or pressure (at the contact zone between colliding plates, for example)
(n) :
a rock that has been changed from its original form by subjection to heat and/or pressure
(adj) :
having been structurally altered as a result of, or resulting from, exposure to intense heat &/or pressure (at the contact zone between colliding plates, for example)
(n) :
a rock that has been changed from its original form by subjection to heat and/or pressure