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mesocratic

[mez-uh-krat-ik, mes-, mee-zuh-, -suh-]

adjective

Petrology.

  1. (of an igneous rock) composed of light and dark minerals in nearly equal amounts.

mesocratic

/ ˌɛəˈæɪ /

adjective

  1. (of igneous rocks) containing 30–60 per cent of ferromagnesian minerals

“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
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Word History and Origins

Origin of mesocratic1

First recorded in 1855–60; meso- + -crat + -ic
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Word History and Origins

Origin of mesocratic1

C20: from meso- + -crat , with allusion to the moderately dark colour of the rock. Compare leucocratic

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mesocranicmesocyclone

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