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theralite

American  
[theer-uh-lahyt] / ˈθɪər əˌlaɪt /

noun

  1. a coarse-grained, phaneritic rock composed of labradorite, nepheline, and augite.


Etymology

Origin of theralite

< Greek thḗra hunting + -lite; said to be so called because success in hunting it down was thought to be certain