Definition of chert
: a rock resembling flint and consisting essentially of a large amount of fibrous chalcedony with smaller amounts of cryptocrystalline quartz and amorphous silica
chertyplay \ˈchər-tē, ˈcha-\ adjective
Recent Examples of chert from the Web
For instance, the Mars 2020 fossil hunters will look for chert and silica—two types of minerals that, on Earth, are ideal for entombing and preserving biological material.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chert'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of chert
First Known Use: 1679See Words from the same year
Seen and Heard
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