Metamict
/ˈmɛtəˌmɪkt/
adjective
1.
of or denoting the amorphous state of a substance that has lost its crystalline structure as a result of the radioactivity of uranium or thorium within it: metamict minerals
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[met-uh-mawr-fik] /ˌmɛt əˈmɔr fɪk/ adjective 1. pertaining to or characterized by change of form, or . 2. Geology. pertaining to or exhibiting structural change or . /ˌmɛtəˈmɔːfɪk/ adjective 1. relating to or resulting from metamorphosis or metamorphism 2. (of rocks) altered considerably from their original structure and mineralogy by pressure and heat Compare igneous, sedimentary […]
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noun 1. Geology. a group of metamorphic rock units characterized by particular mineralogic associations.
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[met-uh-mawr-fiz-uh m] /ˌmɛt əˈmɔr fɪz əm/ noun 1. Geology. a change in the structure or constitution of a rock due to natural agencies, as pressure and heat, especially when the rock becomes harder and more completely crystalline. 2. Archaic. . /ˌmɛtəˈmɔːfɪzəm/ noun 1. the process by which metamorphic rocks are formed 2. a variant of […]