Definition of periclase in English:

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Pronunciation: /ˈperiˌklās/ Pronunciation: /-ˌklāz/


A colorless mineral consisting of magnesium oxide, occurring chiefly in marble and limestone.


Mid 19th century: from modern Latin periclasia, erroneously from Greek peri 'utterly' + klasis 'breaking' (because it cleaves perfectly).

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Syllabification: per·i·clase

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