bone black

[bohn-blak]

bone·black

[bohn-blak]
noun
a black, carbonaceous substance obtained by calcining bones in closed vessels, used as a black pigment, a decolorizing agent, etc.
Also, bone black.


Origin:
1805–15; bone1 + black
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Bone black is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Encyclopedia Britannica
Encyclopedia

bone black

a form of charcoal (q.v.) produced by heating bone in the presence of a limited amount of air. It is used in removing coloured impurities from liquids, especially solutions of raw sugar. Bone black contains only about 12 percent elemental carbon, the remainder being made up principally of calcium phosphate and calcium carbonate.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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