indigo

Indigo is defined as a deep bluish purple color or dye.

(noun)

An example of indigo is a dark bluish purple iris flower.

The definition of indigo is something bluish purple in color.

(adjective)

An example of indigo is a deep purple dress with a hint of blue.

See indigo in Webster's New World College Dictionary

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

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

adjective

of this color

See indigo in American Heritage Dictionary 4

noun pl. in·di·gos or in·di·goes

a. Any of various shrubs or herbs of the genus Indigofera in the pea family, having odd-pinnate leaves and usually red or purple flowers in axillary racemes.
b. A blue dye obtained from these plants or produced synthetically.
Any of several related plants, especially those of the genera Amorpha or Baptisia.
The hue of that portion of the visible spectrum lying between blue and violet, evoked in the human observer by radiant energy with wavelengths of approximately 420 to 450 nanometers; a dark blue to grayish purple blue.

Origin:

Origin: Spanish índigo

Origin: and Dutch indigo (from Portuguese endego)

Origin: , both from Latin indicum

Origin: , from Greek Indikon (pharmakon), Indian (dye)

Origin: , neuter of Indikos, of India

Origin: , from India, India

Origin: , from Indos, the Indus River

Origin: , from Old Persian Hinduš, Sind; see Hindi

Related Forms: