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phonolite

[fohn-l-ahyt]
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noun
  1. a fine-grained volcanic rock composed chiefly of alkali feldspar and nepheline, some varieties of which split into pieces that ring on being struck.

Origin of phonolite

1820–30; < French < German Phonolith. See phono-, -lite
Related formspho·no·lit·ic [fohn-l-it-ik] /ˌfoʊn lˈɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for phonolite

Historical Examples

  • The rock is phonolite, and is divided into irregular columns.

    A Naturalist's Voyage Round the World

    Charles Darwin

  • The Wolf Rock is composed of phonolite, and it occurs largely in Auvergne.

  • (c.) Phonolite (Clinkstone) is a trachytic rock, composed essentially of sanidine, nepheline, and augite or hornblende.

  • At last we draw ourselves up a huge wedge of phonolite and find ourselves at the summit of the first peak.

    The Columbia River

    William Denison Lyman


British Dictionary definitions for phonolite

phonolite

noun
  1. a fine-grained volcanic igneous rock consisting of alkaline feldspars and nepheline
Derived Formsphonolitic (ˌfəʊnəˈlɪtɪk), adjective

Word Origin

C19: via French from German Phonolith; see phono-, -lite
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

Word Origin and History for phonolite

n.

a kind of volcanic rock that rings when struck, c.1830, literally "sounding stone," from phono- + -lite. Based on German klingstein.

Online Etymology Dictionary, © 2010 Douglas Harper