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indigo definition

in·digo (in′di gō′)

noun pl. indigos -·gos′ or indigoes -·goes′

  1. a blue dye, CHNO, obtained from certain plants, esp. a plant (Indigofera tinctoria) native to India, or made synthetically, usually from aniline
  2. any of a genus (Indigofera) of plants of the pea family that yield indigo
  3. a deep violet blue, designated by Newton as one of the seven prismatic or primary colors

Etymology: Sp < L indicum < Gr indikon (pharmakon), lit., Indian (dye) < Indikos, Indian < India, India

adjective

of this color

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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