What is the definition of Buhr-stone? | Dictionary.net

BUHR-STONE

\bˈuːəstˈə͡ʊn], \bˈuːəstˈə‍ʊn], \b_ˈuː_ə_s_t_ˈəʊ_n]\

Definitions of BUHR-STONE

1895 - Glossary of terms and phrases
1871 - The Cabinet Dictionary of the English Language

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(Geol.) A siliceous rock, hard, cellular; very valuable for millstones; the best from the Paris basin.

1895 - Glossary of terms and phrases
By Henry Percy Smith

n. [Old English] A variety of flinty quartz, valuable for mill-stones.

1871 - The Cabinet Dictionary of the English Language

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tinctura quininae ammoniata

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