Indigogen

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Indigogen \In"di*go*gen\, n. [Indigo + -gen.]
     [1913 Webster]
     1. (Chem.) See {Indigo white}, under {Indigo}.
        [1913 Webster]
  
     2. (Physiol. Chem.) Same as {Indican}, 2.


        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Indigo \In"di*go\, a.
     Having the color of, pertaining to, or derived from, indigo.
     [1913 Webster]
  
     {Indigo berry} (Bot.), the fruit of the West Indian shrub
        {Randia aculeata}, used as a blue dye.
  
     {Indigo bird} (Zool.), a small North American finch
        ({Cyanospiza cyanea}). The male is indigo blue in color.
        Called also {indigo bunting}.
  
     {Indigo blue}.
     (a) The essential coloring material of commercial indigo,
         from which it is obtained as a dark blue earthy powder,
         with a reddish luster, {C16H10N2O2}, which may be
         crystallized by sublimation. Indigo blue is also made
         from artificial amido cinnamic acid, and from artificial
         isatine; and these methods are of great commercial
         importance. Called also {indigotin}.
     (b) A dark, dull blue color like the indigo of commerce.
  
     {Indigo brown} (Chem.), a brown resinous substance found in
        crude indigo.
  
     {Indigo copper} (Min.), covellite.
  
     {Indigo green}, a green obtained from indigo.
  
     {Indigo plant} (Bot.), a leguminous plant of several species
        (genus {Indigofera}), from which indigo is prepared. The
        different varieties are natives of Asia, Africa, and
        America. Several species are cultivated, of which the most
        important are the {Indigofera tinctoria}, or {common
        indigo plant}, the {Indigofera Anil}, a larger species,
        and the {Indigofera disperma}.
  
     {Indigo purple}, a purple obtained from indigo.
  
     {Indigo red}, a dyestuff, isomeric with indigo blue, obtained
        from crude indigo as a dark brown amorphous powder.
  
     {Indigo snake} (Zool.), the gopher snake.
  
     {Indigo white}, a white crystalline powder obtained by
        reduction from indigo blue, and by oxidation easily
        changed back to it; -- called also {indigogen}.
  
     {Indigo yellow}, a substance obtained from indigo.
        [1913 Webster]