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noun
The process of metamorphism at extreme temperatures and pressures where rocks are partially heated to magma, to which the affected rocks then become metamorphic after fusing.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From ultra- + metamorphism.
Across languages
1 source translations are retained for this English entry.
