Definify.com
Webster 1913 Edition
Indigo
In′di-go
,Noun.
pl.
Indigoes
(#)
. 1.
A kind of deep blue, one of the seven prismatic colors.
2.
(Chem.)
A blue dyestuff obtained from several plants belonging to very different genera and orders, such as, the woad,
Isatis tinctoria
(family Cruciferae
), Indigofera suffroticosa
, Indigofera tinctoria
(family Leguminosae
), Indigofera Anil
, Nereum tinctorium
, Polygonum tinctorium
Ait. (family Polygonaceae
), etc.; called also natural indigo
. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican
. ☞ Commercial indigo contains the essential coloring principle indigo blue or indigotine, with several other dyes; as, indigo red, indigo brown, etc., and various impurities. Indigo is insoluble in ordinary reagents, with the exception of strong sulphuric acid.
Chinese indigo
(Bot.)
, Isatis indigotica
, a kind of woad. Wild indigo
(Bot.)
, the American herb
Baptisia tinctoria
which yields a poor quality of indigo, as do several other species of the same genus.In′di-go
,Adj.
Having the color of, pertaining to, or derived from, indigo.
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.
Webster 1828 Edition
Indigo
IN'DIGO
,Noun.
Definition 2024
índigo
índigo
Portuguese
Adjective
índigo m (feminine singular índiga, masculine plural índigos, feminine plural índigas, comparable)
Synonyms
Noun
índigo m (uncountable)
Synonyms
See also
| Colors in Portuguese · cores (layout · text) | ||||
|---|---|---|---|---|
| vermelho | verde | amarelo | creme | branco |
| carmim | magenta | azul-petróleo | lima | rosa, cor-de-rosa |
| índigo, anil |
azul | laranja, cor-de-laranja |
cinza | violeta |
| preto | roxo | castanho, marrom |
azul céu | ciano |
