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intratelluric

adjective
in·​tra·​telluric | \ "+\

Definition of intratelluric

1 : situated, formed, or occurring deep within the earth —used especially of a mineral of an igneous rock
2 : of, relating to, or constituting the period or stage of crystallization of igneous rocks prior to eruption

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History and Etymology for intratelluric

intra- + telluric; translation of German intratellurisch

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