bone ash

Origin of bone ash

First recorded in 1615–25
Also called bone· earth·.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for bone ash

Historical Examples of bone ash


British Dictionary definitions for bone ash

bone ash

noun
  1. the residue obtained when bones are burned in air, consisting mainly of calcium phosphate. It is used as a fertilizer and in the manufacture of bone china
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