Similar words: metamorphic, metamorphose, metamorphosis, morphine, amorphous, isomorphic, polymorphic, anthropomorphic. Meaning: ['metə'mɔrfɪzm] 
n. change in the structure of rock by natural agencies such as pressure or heat of introduction of new chemical substances.
n. change in the structure of rock by natural agencies such as pressure or heat of introduction of new chemical substances. 
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61, Thus, the boron-bearing rock system and the magnesian rocks are the foundation of the borate deposits, whereas regional metamorphism and migmatitization and tectonism are the necessary conditions.
62, On the condition of thermal contact metamorphism, clay minerals in coal are changed into andalusite.
More similar words: metamorphic, metamorphose, metamorphosis, morphine, amorphous, isomorphic, polymorphic, anthropomorphic, morph, morphosis, morphology, pseudomorph, polymorphous, metabolism, corporate income tax, orphan, orphanage, tantamount, amoral, enamor, clamor, amorous, enamored, amortize, pentameter, amphetamine, clamorous, glamorize, glamorous, metal.