INDIGO


Meaning of INDIGO in English

n.

Blue vat dye , obtained until about 1900 entirely from some species of the indigo plant .

Extraction of the dye was important to the economy of colonial America and remained so in India until the early 20th century. Synthetic indigo has replaced the natural dye; it is reduced chemically to the soluble yellow compound leucoindigo, in which form it is applied to textile fibres and reoxidized to indigo (see oxidation-reduction ).

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.