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in·di·go

npl  -gos  or  -goes  1 a  :  a blue dye obtained from indigo plants (as Indigofera tinctoriaof Africa and India, I. anilof So. America, and I. auriculataof Arabia and Egypt)  b  :  the principal coloring matter C16H10N2O2 of natural indigo usu. synthesized as a blue powder with a coppery luster - called also indigotin   2  :  INDIGO PLANT .
 
 
 
Similar sounding terms:  indica  in·take 

 
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