Definition of bone ash in English:

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bone ash

noun

[mass noun]
The mineral residue of calcined bones.
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.
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