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Definition of alkaloid
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 alkaloid is as below...
Alkaloid
(a.) Alt. of
Alkaloida.
Lern More About Alkaloid
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Quinidine
::
Quinidine
(n.) An
alkaloid
isomeric
with, and
resembling,
quinine,
found in
certain
species
of
cinchona,
from which it is
extracted
as a
bitter
white
crystalline
substance;
conchinine.
It is used
somewhat
as a
febrifuge..
Strychnos
::
Strychnine
(n.) A very
poisonous
alkaloid
resembling
brucine,
obtained
from
various
species
of
plants,
especially
from
species
of
Loganiaceae,
as from the seeds of the St.
Ignatius
bean
(Strychnos
Ignatia)
and from nux
vomica.
It is
obtained
as a white
crystalline
substance,
having
a very
bitter
acrid
taste,
and is
employed
in
medicine
(chiefly
in the form of the
sulphate)
as a
powerful
neurotic
stimulant.
Called
also
strychnia,
and
formerly
strychnina..
Atropine
::
Atropine
(n.) A
poisonous,
white,
crystallizable
alkaloid,
extracted
from the
Atropa
belladonna,
or
deadly
nightshade,
and the
Datura
Stramonium,
or thorn
apple.
It is
remarkable
for its power in
dilating
the pupil of the eye.
Called
also
daturine..
Narceine
::
Narceine
(n.) An
alkaloid
found in small
quantities
in
opium,
and
extracted
as a white
crystalline
substance
of a
bitter
astringent
taste.
It is a
narcotic.
Called
also
narceia..
Brucine
::
Brucine
(n.) A
powerful
vegetable
alkaloid,
found,
associated
with
strychnine,
in the seeds of
different
species
of
Strychnos,
especially
in the Nux
vomica.
It is less
powerful
than
strychnine.
Called
also
brucia
and
brucina..
Lupuline
::
Lupuline
(n.) An
alkaloid
extracted
from hops as a
colorless
volatile
liquid.
Violine
::
Violine
(n.) A pale
yellow
amorphous
substance
of
alkaloidal
nature
and
emetic
properties,
said to have been
extracted
from the root and
foliage
of the
violet
(Viola)..
Piperidine
::
Piperidine
(n.) An oily
liquid
alkaloid,
C5H11N,
having
a hot,
peppery,
ammoniacal
odor. It is
related
to
pyridine,
and is
obtained
by the
decomposition
of
piperine..
Colchicine
::
Colchicine
(n.) A
powerful
vegetable
alkaloid,
C17H19NO5,
extracted
from the
Colchicum
autumnale,
or
meadow
saffron,
as a white or
yellowish
amorphous
powder,
with a
harsh,
bitter
taste;
--
called
also
colchicia..
Sinapine
::
Sinapine
(n.) An
alkaloid
occuring
in the seeds of
mustard.
It is
extracted,
in
combination
with
sulphocyanic
acid, as a white
crystalline
substance,
having
a hot,
bitter
taste.
When
sinapine
is
isolated
it is
unstable
and
undergoes
decomposition..
Cotarnine
::
Cotarnine
(n.) A
white,
crystalline
substance,
C12H13NO3,
obtained
as a
product
of the
decomposition
of
narcotine.
It has weak basic
properties,
and is
usually
regarded
as an
alkaloid..
Caffeine
::
Caffeine
(n.) A
white,
bitter,
crystallizable
substance,
obtained
from
coffee.
It is
identical
with the
alkaloid
theine
from tea
leaves,
and with
guaranine
from
guarana..
Mydaleine
::
Mydaleine
(n.) A toxic
alkaloid
(ptomaine)
obtained
from
putrid
flesh and from
herring
brines.
As a
poison
it is said to
execute
profuse
diarrhoea,
vomiting,
and
intestinal
inflammation..
Gelsemine
::
Gelsemine
(n.) An
alkaloid
obtained
from the
yellow
jasmine
(Gelsemium
sempervirens),
as a
bitter
white
semicrystalline
substance;
--
called
also
gelsemia..
Glucoside
::
Glucoside
(n.) One of a large
series
of
amorphous
or
crystalline
substances,
occurring
very
widely
distributed
in
plants,
rarely
in
animals,
and
regarded
as
influental
agents
in the
formation
and
disposition
of the
sugars.
They are
frequently
of a
bitter
taste,
but, by the
action
of
ferments,
or of
dilute
acids and
alkalies,
always
break down into some
characteristic
substance
(acid,
aldehyde,
alcohol,
phenole,
or
alkaloid)
and
glucose
(or some other
sugar);
hence the name. They are of the natur
Wrightine
::
Wrightine
(n.) A rare
alkaloid
found in the bark of an East
Indian
apocynaceous
tree
(Wrightia
antidysenterica),
and
extracted
as a
bitter
white
crystalline
substance.
It was
formerly
used as a
remedy
for
diarrh/a.
Called
also
conessine,
and
neriine..
Morphine
::
Morphine
(n.) A
bitter
white
crystalline
alkaloid
found in
opium,
possessing
strong
narcotic
properties,
and much used as an
anodyne;
--
called
also
morphia,
and
morphina..
Solanidine
::
Solanidine
(n.) An
alkaloid
produced
by the
decomposition
of
solanine,
as a white
crystalline
substance
having
a harsh
bitter
taste..
Lanthopine
::
Lanthopine
(n.) An
alkaloid
found in opium in small
quantities,
and
extracted
as a white
crystalline
substance..
Tropidine
::
Tropidine
(n.) An
alkaloid,
C8H13N,
obtained
by the
chemical
dehydration
of
tropine,
as an oily
liquid
having
a
coninelike
odor..
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