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rock cycle

noun
1.
Geology. a continuous process by which rocks are created, changed from one form to another, destroyed, and then formed again.
Also called geological cycle.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for geological-cycle

rock cycle

noun
1.
another name for geological cycle
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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