chert

[ churt ]

/ tʃɜrt /

noun

a compact rock consisting essentially of microcrystalline quartz.

Origin of chert

First recorded in 1670–80; origin uncertain

OTHER WORDS FROM chert

cherty, adjective

Words nearby chert

cherry-red spot, cherry-red spot myoclonus syndrome, cherrystone, cherry tomato, chersonese, chert, Chertsey, cherub, cherubfish, cherubic, Cherubicon

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for chert

Seven specimens were of basalt and one each of chert and porphyry.
The Topanga Culture Final Report on Excavations, 1948|A. E. Treganza
Most examples from this area are made from Ft. Payne chert, which is usually patinated to a chocolate brown color.
Handbook of Alabama Archaeology: Part I Point Types|James W. Cambron
He mun ha' summut to prop his ribs out, lass, as he delves through th' chert and tood-stone.
Harper's New Monthly Magazine, Volume 1, No. 2, July, 1850.|Various
The materials include basalt, chert, chalcedony, and obsidian.
The Topanga Culture Final Report on Excavations, 1948|A. E. Treganza

As seen on a polished slab of chert from the sand of the Upper Oolite, Tisbury.
A Manual of Elementary Geology|Charles Lyell.

British Dictionary definitions for chert

chert

/ (tʃɜːt) /

noun

a microcrystalline form of silica usually occurring as bands or layers of pebbles in sedimentary rock. Formula: SiO 2 . Varieties include flint, lyddite (Lydian stone)Also called: hornstone

Derived forms of chert

cherty, adjective

Word Origin for chert

C17: of obscure origin

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 chert

chert

[ chûrt ]

A hard, brittle sedimentary rock consisting of microcrystalline quartz. It is often reddish-brown to green but can also occur in a variety of other colors, especially white, pink, brown, or black. Chert often contains impurities such as calcium, iron-oxide, or the remains of silica-rich organisms. It usually occurs as nodules in limestone and dolomite and has curved fractures.

单词	chert
释义	chert [ churt ] / tʃɜrt / noun a compact rock consisting essentially of microcrystalline quartz. Origin of chert First recorded in 1670–80; origin uncertain OTHER WORDS FROM chert cherty, adjective Words nearby chert cherry-red spot, cherry-red spot myoclonus syndrome, cherrystone, cherry tomato, chersonese, chert, Chertsey, cherub, cherubfish, cherubic, Cherubicon Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for chert Seven specimens were of basalt and one each of chert and porphyry. The Topanga Culture Final Report on Excavations, 1948\|A. E. Treganza Most examples from this area are made from Ft. Payne chert, which is usually patinated to a chocolate brown color. Handbook of Alabama Archaeology: Part I Point Types\|James W. Cambron He mun ha' summut to prop his ribs out, lass, as he delves through th' chert and tood-stone. Harper's New Monthly Magazine, Volume 1, No. 2, July, 1850.\|Various The materials include basalt, chert, chalcedony, and obsidian. The Topanga Culture Final Report on Excavations, 1948\|A. E. Treganza As seen on a polished slab of chert from the sand of the Upper Oolite, Tisbury. A Manual of Elementary Geology\|Charles Lyell. British Dictionary definitions for chert chert / (tʃɜːt) / noun a microcrystalline form of silica usually occurring as bands or layers of pebbles in sedimentary rock. Formula: SiO 2 . Varieties include flint, lyddite (Lydian stone)Also called: hornstone Derived forms of chert cherty, adjective Word Origin for chert C17: of obscure origin 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 chert chert [ chûrt ] A hard, brittle sedimentary rock consisting of microcrystalline quartz. It is often reddish-brown to green but can also occur in a variety of other colors, especially white, pink, brown, or black. Chert often contains impurities such as calcium, iron-oxide, or the remains of silica-rich organisms. It usually occurs as nodules in limestone and dolomite and has curved fractures. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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