boneblack

bone·black

also bone black B0382700 (bōn′blăk′)n. A black pigment containing about 10 percent charcoal, made by roasting bones in an airtight container and used in polishes, as a filtering medium, and in decolorizing sugar. Also called bone charcoal.

boneblack

(ˈbəʊnˌblæk) n (Dyeing) a black residue from the destructive distillation of bones, containing about 10 per cent carbon and 80 per cent calcium phosphate, used as a decolorizing agent and pigment

bone′ black`

n. a black carbonaceous substance obtained by calcining bones in closed vessels, used esp. as a pigment. [1805–15]

单词	boneblack
释义	boneblack bone·black also bone black B0382700 (bōn′blăk′)n. A black pigment containing about 10 percent charcoal, made by roasting bones in an airtight container and used in polishes, as a filtering medium, and in decolorizing sugar. Also called bone charcoal. boneblack (ˈbəʊnˌblæk) n (Dyeing) a black residue from the destructive distillation of bones, containing about 10 per cent carbon and 80 per cent calcium phosphate, used as a decolorizing agent and pigment bone′ black` n. a black carbonaceous substance obtained by calcining bones in closed vessels, used esp. as a pigment. [1805–15] EncyclopediaSeebone black
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