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Definition of indigo
Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of indigo is as below...
Indigo
(n.) A blue
dyestuff
obtained
from
several
plants
belonging
to very
different
genera
and
orders;
as, the woad,
Isatis
tinctoria,
Indigofera
tinctoria,
I. Anil,
Nereum
tinctorium,
etc. 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..
Lern More About Indigo
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Covellite
::
Covellite
(n.) A
native
sulphide
of
copper,
occuring
in
masses
of a dark blue
color;
-- hence
called
indigo
copper..
Indin
::
Indin (n.) A dark red
crystalline
substance,
isomeric
with and
resembling
indigo
blue, and
obtained
from
isatide
and
dioxindol..
Indigo
::
Indigo
(n.) A blue
dyestuff
obtained
from
several
plants
belonging
to very
different
genera
and
orders;
as, the woad,
Isatis
tinctoria,
Indigofera
tinctoria,
I. Anil,
Nereum
tinctorium,
etc. 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..
Phenicine
::
Phenicine
(n.) A
purple
powder
precipitated
when a
sulphuric
solution
of
indigo
is
diluted
with
water.
Indolin
::
Indolin
(n.) A dark
resinous
substance,
polymeric
with
indol,
and
obtained
by the
reduction
of
indigo
white..
Marsdenia
::
Marsdenia
(n.) A genus of
plants
of the
Milkweed
family,
mostly
woody
climbers
with
fragrant
flowers,
several
species
of which
furnish
valuable
fiber,
and one
species
(Marsdenia
tinctoria)
affords
indigo..
Pyrosulphuric
::
Pyrosulphuric
(a.)
Pertaining
to, or
designating,
an acid
called
also
disulphuric
acid)
obtained
by
distillation
of
certain
sulphates,
as a
colorless,
thick,
oily
liquid,
H2S2O7
resembling
sulphuric
acid. It is used in the
solution
of
indigo,
in the
manufacture
of
alizarin,
and in
dehydration..
Indophenol
::
Indophenol
(n.) Any one of a
series
of
artificial
blue
dyestuffs,
resembling
indigo
in
appearance,
and
obtained
by the
action
of
phenol
on
certain
nitrogenous
derivatives
of
quinone.
Simple
indophenol
proper
has not yet been
isolated..
Bluing
::
Bluing
(n.)
Something
to give a
bluish
tint, as
indigo,
or
preparations
used by
washerwomen..
Xylindein
::
Xylindein
(n.) A green or blue
pigment
produced
by
Peziza
in
certain
kinds of
decayed
wood, as the
beech,
oak,
birch,
etc., and
extracted
as an
amorphous
powder
resembling
indigo..
Violaniline
::
Violaniline
(n.) A
dyestuff
of the
induline
group,
made from
aniline,
and used as a
substitute
for
indigo
in
dyeing
wool and silk a
violet-blue
or a
gray-blue
color..
Indigotin
::
Indigotin
(n.) See
Indigo
blue, under
Indigo..
Skatol
::
Skatol
(n.) A
constituent
of human
faeces
formed
in the small
intestines
as a
product
of the
putrefaction
of
albuminous
matter.
It is also found in
reduced
indigo.
Chemically
it is
methyl
indol,
C9H9N..
Woad
::
Woad (n.) A blue
dyestuff,
or
coloring
matter,
consisting
of the
powdered
and
fermented
leaves
of the
Isatis
tinctoria.
It is now
superseded
by
indigo,
but is
somewhat
used with
indigo
as a
ferment
in
dyeing..
Indirubin
::
Indirubin
(n.) A
substance
isomeric
with, and
resembling,
indigo
blue, and
accompanying
it as a side
product,
in its
artificial
production..
Diisatogen
::
Diisatogen
(n.) A red
crystalline
nitrogenous
substance
or
artificial
production,
which by
reduction
passes
directly
to
indigo..
Aniline
::
Aniline
(n.) An
organic
base
belonging
to the
phenylamines.
It may be
regarded
as
ammonia
in which one
hydrogen
atom has been
replaced
by the
radical
phenyl.
It is a
colorless,
oily
liquid,
originally
obtained
from
indigo
by
distillation,
but now
largely
manufactured
from coal tar or
nitrobenzene
as a base from which many
brilliant
dyes are
made..
Indigo
::
Indigo
(n.) A kind of deep blue, one of the seven
prismatic
colors..
Indigogen
::
Indigogen
(n.) Same as
Indican,
2..
Indigometry
::
Indigometry
(n.) The art or
method
of
determining
the
coloring
power of
indigo.
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