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bone char

bone char

9.2
A black material made by burning animal bones used to colour or filter liquids
  • noun
  • /boʊn tʃɑr/
  • Specialized
translation icon : carbón de hueso
  • Historically, bone char was used in sugar refining to decolorize and purify the product.

Examples

  • The artist used bone char to create a rich black pigment.

  • Modern water treatment plants sometimes use bone char as a filtration medium.

  • The artist selected bone char as a pigment for its distinctive black hue.

  • Many painters prefer bone char for its deep color.

  • Historically, bone char was used in sugar refining to decolorize and purify the product.

  • Modern water treatment plants sometimes use bone char as a filtration medium.

  • The artist selected bone char as a pigment for its distinctive black hue.

Synonyms

animal charcoal
vsbone char
  • Specialized
7.5

A black material made by burning animal bones used to color things and clean liquids

is used mainly for pigment and filtering rather than only purification
bone black
vsbone char
  • Specialized
8.4

A black pigment made by burning animal bones for paint and ink

is broader, used both as pigment and for filtering
animal black
vsbone char
  • Archaic
9.9

A black material made from burned animal bones used in paint and ink

is less linked to purification and more to pigment use

How Dark

carbon black
  • Specialized
1 5.9
lampblack
  • Specialized
1 9.8
bone char
  • Specialized
9.2
charcoal
31 2.6

Surface Forms

bone char singular
bone chars plural

Morphology

bone + char

The compound is directly compositional: a B1 learner who knows 'bone' (animal skeleton material) and 'char' (carbonized, blackened remains) can infer a blackened material made from bones used as pigment or for filtering. Although the term is somewhat technical, its meaning follows straightforward semantic combination and is therefore predictable from the constituents.

Etymology

The noun bone char comes from burning animal bones until they are black, because char means to burn. The black, burned bones were used as a dark 'pigment' and to 'trap' unwanted bits in liquids, so today bone char means a black material made from burned bones used for coloring and filtering.