Prussian blue Hear it!

Prussian blue definition

Prussian blue

  1. any of a group of dark-blue powders, ferrocyanides of iron, used as dyes or pigments; esp., ferric ferrocyanide, Fe[Fe(CN)]
  2. a strong, dark blue

Etymology: orig. discovered in Prussia (1704)

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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