in·di·go
n, pl -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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