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DOLERITE

 - 2 dictionary results

dol⋅er⋅ite

[dol-uh-rahyt]
–noun Petrology.
1. a coarse-grained variety of basalt.
2. any of various other igneous rocks, as diabase.
3. any basaltlike igneous rock whose composition can be determined only by microscopic examination.

Origin:
1830–40; < F dolérite < Gk doler(ós) deceitful (deriv. of dólos wile) + F -ite -ite 1


dol⋅er⋅it⋅ic [dol-uh-rit-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To DOLERITE
dol·er·ite   (dŏl'ə-rīt')   
n.   Chiefly British
A dark, fine-grained igneous rock; diabase.

[French dolérite, from Greek doleros, deceitful (from its easily being mistaken for diorite), from dolos, trick; see del-2 in Indo-European roots.]
dol'er·it'ic (ə-rĭt'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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