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pyroxene

Pronunciation: /pʌɪˈrɒksiːn/

Definition of pyroxene

noun

  • any of a large class of rock-forming silicate minerals, generally containing calcium, magnesium, and iron and typically occurring as prismatic crystals.

Origin:

early 19th century: from pyro- 'fire' + Greek xenos 'stranger' (because the mineral group was supposed alien to igneous rocks)

pyroxene in other Oxford dictionaries

Definition of pyroxene in the US English dictionary