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/t͡ʃɜːt/ · noun
(geology, uncountable) Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral..
Use chert when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Chert means (geology, uncountable) Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use chert where its definition matches the intended context.
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