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trachyte

Pronunciation: /ˈtreɪkʌɪt, ˈtrakʌɪt/

Definition of trachyte

noun

[mass noun] Geology
  • a grey fine-grained volcanic rock consisting largely of alkali feldspar.

Origin:

early 19th century (denoting a volcanic rock with a rough or gritty surface): from Greek trakhus 'rough' or trakhutēs 'roughness'

trachyte in other Oxford dictionaries

Definition of trachyte in the US English dictionary

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