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oolith

[oh-uh-lith] /ˈoʊ ə lɪθ/
noun, Geology
1.
any of the component concretions of a piece of oolite.
Origin
1780-1790
1780-90; oo- + -lith
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for oolith

oolith

/ˈəʊəˌlɪθ/
noun
1.
any of the tiny spherical grains of sedimentary rock of which oolite is composed
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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oolith in Science
oolith
  (ō'ə-līt')   
A small, round grain consisting of calcium carbonate, silica, or dolomite. Ooliths have concentric layers that form around a nucleus, such as a shell fragment, a sand grain, or a pellet of alga. They typically have diameters of 0.25 to 2 mm. Ooliths usually form by inorganic precipitation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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