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oolite

[oh-uh-lahyt] /ˈoʊ əˌlaɪt/
noun, Geology
1.
a limestone composed of minute rounded concretions resembling fish roe, in some places altered to ironstone by replacement with iron oxide.
Also called egg stone.
Origin
1775-1785
1775-85; (< French oölithe) < New Latin oölithēs. See oo-, -lite
Related forms
oolitic
[oh-uh-lit-ik] /ˌoʊ əˈlɪt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for oolite

oolite

/ˈəʊəˌlaɪt/
noun
1.
any sedimentary rock, esp limestone, consisting of tiny spherical concentric grains within a fine matrix
Derived Forms
oolitic (ˌəʊəˈlɪtɪk) adjective
Word Origin
C18: from French from New Latin oolitēs, literally: egg stone; probably a translation of German Rogenstein roe stone
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 Origin and History for oolite
n.

"rock consisting of fine grains of carbonate of lime," 1785, from Modern Latin oolites, from oo-, comb. form of Greek oon "egg" (cognate with Old English æg, see egg (n.)) + lithos "stone" (see litho-). So called because the rock resembles the roe of fish.

Online Etymology Dictionary, © 2010 Douglas Harper
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oolite in Science
oolite
  (ō'ə-līt')   
A sedimentary rock consisting of ooliths that are cemented together by calcium carbonate.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for oolite

ovoid or spherical crystalline deposit with a concentric or radial structure; most are composed of calcium carbonate, but some are composed of silica, siderite, calcium phosphate, iron silicate, or iron oxide. Oolite diameters range from 0.25 to 2 mm (0.01 to 0.08 inch), with most being in the 0.5- to 1-millimetre range; oolitic bodies with diameters greater than 2 mm are called pisolites.

Learn more about oolite with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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