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Etymology edit

From Italian zaffera, from Latin sapphirus (sapphire). Doublet of sapphire.

Pronunciation edit

Noun edit

zaffre (countable and uncountable, plural zaffres)

  1. A blue pigment obtained by roasting cobalt ore.
    • 1791, Erasmus Darwin, The Economy of Vegetation, J. Johnson, page 49:
      If Zaffre or Regulus of Cobalt be dissolved in the same manner in spirit of nitre, or aqua fortis, a reddish colour is produced on exposing the paper to heat.
  2. A cobalt blue colour, like that of the pigment.

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