tephrite

American

[tef-rahyt] / ˈtɛf raɪt /

noun

Petrography.

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

tephrite British

/ ˈtɛfraɪt, tɪˈfrɪtɪk /

noun

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

Other Word Forms

tephritic adjective

Etymology

Origin of tephrite

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From Project Gutenberg

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

From Project Gutenberg

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023