bone ash

noun

Definition of bone ash 

: the white porous residue chiefly of tribasic calcium phosphate from bones calcined in air used especially in making pottery and glass and in cleaning jewelry

First Known Use of bone ash

1622, in the meaning defined above

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Dictionary Entries near bone ash

Bone

bone-ace

Bone Age

bone ash

bone bed

bone black

bonebreaker

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The first known use of bone ash was in 1622

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