[ dol-uh-rahyt ]

  1. a coarse-grained variety of basalt.

  2. any of various other igneous rocks, as diabase.

  1. any basaltlike igneous rock whose composition can be determined only by microscopic examination.

Origin of dolerite

1830–40; <French dolérite<Greek doler(ós) deceitful (derivative of dólos wile) + French -ite-ite1

Other words from dolerite

  • dol·er·it·ic [dol-uh-rit-ik], /ˌdɒl əˈrɪt ɪk/, adjective

Words Nearby dolerite Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use dolerite in a sentence

British Dictionary definitions for dolerite


/ (ˈdɒləˌraɪt) /

  1. a dark basic intrusive igneous rock consisting of plagioclase feldspar and a pyroxene, such as augite; often emplaced in dykes

  2. any dark igneous rock whose composition cannot be determined with the naked eye

Origin of dolerite

C19: from French dolérite, from Greek doleros deceitful; so called because of the difficulty of determining its composition

Derived forms of dolerite

  • doleritic (ˌdɒləˈrɪtɪk), adjective

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

Scientific definitions for dolerite


[ dŏlə-rīt′ ]

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