We don't have synonyms for metamorph yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are mesomorph, tetramorph and metaloph.
°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).
°A rock that has been changed from its original form by subjection to heat and/or pressure.
°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).
°A rock that has been changed from its original form by subjection to heat and/or pressure.