| 单词 | oolith |
| 释义 | oolith[ oh-uh-lith ] / ˈoʊ ə lɪθ / noun Geology.any of the component concretions of a piece of oolite. Origin of oolithFirst recorded in 1780–90; oo- + -lith Words nearby oolithookinete, Ookpik, oolachan, oolemma, oolite, oolith, oology, oolong, oom, oomiak, oompah Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for oolithoolith / (ˈəʊəˌlɪθ) / nounany 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 Scientific definitions for oolithoolith [ 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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