indigo definition

  • noun:
    • Any of numerous shrubs or natural herbs for the genus Indigofera within the pea household, having odd-pinnate leaves and usually purple or purple plants in axillary racemes.
    • A blue dye obtained because of these plants or created synthetically.
    • some of a number of related flowers, specifically those associated with the genera Amorpha or Baptisia.
    • The hue of the percentage of the noticeable spectrum lying between blue and violet, evoked when you look at the human observer by radiant energy with wavelengths of around 420 to 450 nanometers; a dark blue to grayish purple-blue.
    • A purplish-blue colour
    • An indigo-colored dye acquired from particular flowers (the indigo-plant or woad), or an equivalent synthetic dye.
    • A kind of deep blue, one of many seven prismatic colors.
    • A blue dyestuff acquired from a few flowers owned by very different genera and purchases, eg, the woad, Isatis tinctoria (family Cruciferae), Indigofera suffroticosa, Indigofera tinctoria (family Leguminosae), Indigofera Anil, Nereum tinctorium, Polygonum tinctorium Ait. (family members Polygonaceae), etc.; called also all-natural indigo. It really is a dark blue natural compound, tasteless and odorless, with a copper-violet luster whenever rubbed. Indigo cannot exist inside flowers as such, but is obtained by decomposition regarding the glycoside indican.
    • A substance acquired in the shape of a blue powder from leguminous plants regarding the genus Indigofera, and used as a blue dye. See indigoplant.
    • The violet-blue color of the range, expanding, based on Helmholtz, from G two-thirds for the method to F in the prismatic range. The name had been introduced by Newton, but features lately been discarded because of the most readily useful article authors.
    • An American leguminous plant, Baptisia australis. See Baptisia. Also referred to as blue untrue indigo and crazy indigo.
    • just like Japanese indigo.
    • In Australian Continent, any plant of this genus Swainsona of this bean family members, specifically S. galegifolia. See Swainsona.
    • a blue dye obtained from flowers or made synthetically
    • a blue-violet color
    • deciduous subshrub of southeastern Asia having pinnate leaves and groups of purple or purple plants; a source of indigo dye
  • adjective:
    • Having a deep blue colour.
    • obtaining the colour of, pertaining to, or produced from, indigo.
    • having a color between blue and violet

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