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

Derived Forms

• tephritic, adjective

Other Words From

• teph·rit·ic [tef-, rit, -ik], adjective

Word History and Origins

Origin of tephrite¹

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

Word History and Origins

Origin of tephrite¹

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

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg