Example sentences from the Web for underclay

It rests on the underclay b b', filled with roots of trees in situ, and it supports a growing forest (C D).
A Manual of Elementary Geology|Charles Lyell.
These roots were Stigmaria, and the stuff into which they penetrated was an underclay.
Scientific American Supplement, No. 447, July 26, 1884|Various
I wish Ehrenberg would undertake a microscopical hunt for infusoria in the underclay and shales; it might reveal something.
More Letters of Charles Darwin Volume II|Charles Darwin

underclay

/ (ˈʌndəˌkleɪ) /

noun

a grey or whitish clay rock containing fossilized plant roots and occurring beneath coal seams. When used as a refractory, it is known as fireclay

Words nearby underclay

undercast, undercellar, undercharge, underclass, underclassman, underclay, underclothes, undercoat, undercoating, undercompensate, under consideration

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

单词	underclay
释义	Example sentences from the Web for underclay It rests on the underclay b b', filled with roots of trees in situ, and it supports a growing forest (C D). A Manual of Elementary Geology\|Charles Lyell. These roots were Stigmaria, and the stuff into which they penetrated was an underclay. Scientific American Supplement, No. 447, July 26, 1884\|Various I wish Ehrenberg would undertake a microscopical hunt for infusoria in the underclay and shales; it might reveal something. More Letters of Charles Darwin Volume II\|Charles Darwin underclay / (ˈʌndəˌkleɪ) / noun a grey or whitish clay rock containing fossilized plant roots and occurring beneath coal seams. When used as a refractory, it is known as fireclay Words nearby underclay undercast, undercellar, undercharge, underclass, underclassman, underclay, underclothes, undercoat, undercoating, undercompensate, under consideration 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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