dolerite

[ dol-uh-rahyt ]

nounPetrology.
  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

1
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

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How to use dolerite in a sentence

British Dictionary definitions for dolerite

dolerite

/ (ˈdɒləˌraɪt) /


noun
  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

1
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

dolerite

[ dŏlə-rīt′ ]


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