Definition of bone ash in English:

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bone ash


The mineral residue of calcined bones, used chiefly in the production of bone china and fertilizers.
Example sentences
  • The major ingredients are sand, soda ash, potash, zinc, and bone ash.
  • Some glaze formulas or recipes also use volcanic ash or even bone ash.
  • In its simplest form this involved heating a metal to melting point in a vessel made of a dried paste of bone ash.

For editors and proofreaders

Syllabification: bone ash

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