indigotin
n . 靛青,靛蓝
靛青,靛蓝
indigotin n 1 :
a blue dye obtained from plants or made synthetically [
synonym :
{
anil }, {
indigo }, {
indigotin }]
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 ]
Indigotin \
In "
di *
go *
tin \,
n . (
Chem .)
See {
Indigo blue },
under {
Indigo }.
[
1913 Webster ]
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