au·​to·​metamorphism | \" +\

Definition of autometamorphism 

: alteration of igneous rocks by their own residual solutions without introduction of extraneous matter

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First Known Use of autometamorphism

1917, in the meaning defined above

History and Etymology for autometamorphism

aut- + metamorphism

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The first known use of autometamorphism was in 1917

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to clear from alleged fault or guilt

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