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tephrite

[ tef-rahyt ]

noun

, Petrography.
  1. a basaltic rock consisting essentially of pyroxene and plagioclase with nepheline or leucite.


tephrite

/ ˈtɛfraɪt; tɪˈfrɪtɪk /

noun

  1. a variety of basalt containing plagioclase, augite, and a feldspathoid, commonly nepheline, or leucite
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Derived Forms

  • tephritic, adjective
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Other Words From

  • teph·rit·ic [tef-, rit, -ik], adjective
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Word History and Origins

Origin of tephrite1

1875–80; < Greek tephr ( ós ) ash-colored + -ite 1
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Word History and Origins

Origin of tephrite1

C17: from Greek tephros, from tephra ashes; see -ite 1
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Example Sentences

Teph′ritoid, a variety of tephrite; Tephi′roite, a reddish silicate of manganese.

Tephrite, tef′rīt, n. a name applied to certain modern volcanic rocks.

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tephratephrochronology