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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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Chelerythrine
::
Chelerythrine
(n.) An
alkaloidal
principle
obtained
from the
celandine,
and named from the red color of its
salts.
It is a
colorless
crystalline
substance,
and acts as an acrid
narcotic
poison.
It is
identical
with
sanguinarine..
Quinogen
::
Quinogen
(n.) A
hypothetical
radical
of
quinine
and
related
alkaloids.
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..
Bebirine
::
Bebirine
(n.) An
alkaloid
got from the bark of the
bebeeru,
or green heart of
Guiana
(Nectandra
Rodioei).
It is a
tonic,
antiperiodic,
and
febrifuge,
and is used in
medicine
as a
substitute
for
quinine..
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..
Delphinine
::
Delphinine
(n.) A
poisonous
alkaloid
extracted
from the
stavesacre
(Delphinium
staphisagria),
as a
colorless
amorphous
powder..
Tropidine
::
Tropidine
(n.) An
alkaloid,
C8H13N,
obtained
by the
chemical
dehydration
of
tropine,
as an oily
liquid
having
a
coninelike
odor..
Menispermine
::
Menispermine
(n.) An
alkaloid
distinct
from
picrotoxin
and
obtained
from the
cocculus
indicus
(the fruit of
Anamirta
Cocculus,
formerly
Menispermum
Cocculus)
as a
white,
crystalline,
tasteless
powder;
--
called
also
menispermina..
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
Cinchonidine
::
Cinchonidine
(n.) One of the
quinine
group of
alkaloids,
found
especially
in red
cinchona
bark. It is a white
crystalline
substance,
C19H22N2O,
with a
bitter
taste and
qualities
similar
to, but
weaker
than,
quinine;
--
sometimes
called
also
cinchonidia..
Curarine
::
Curarine
(n.) A
deadly
alkaloid
extracted
from the
curare
poison
and from the
Strychnos
toxifera.
It is
obtained
in
crystalline
colorless
salts.
Opianine
::
Opianine
(n.) An
alkaloid
found in small
quantity
in
opium.
It is
identical
with
narcotine.
Lupuline
::
Lupuline
(n.) An
alkaloid
extracted
from hops as a
colorless
volatile
liquid.
Glaucine
::
Glaucine
(n.) An
alkaloid
obtained
from the plant
Glaucium,
as a
bitter,
white,
crystalline
substance..
Harmine
::
Harmine
(n.) An
alkaloid
accompanying
harmaline
(in the
Peganum
harmala),
and
obtained
from it by
oxidation.
It is a white
crystalline
substance..
Quinine
::
Quinine
(n.) An
alkaloid
extracted
from the bark of
several
species
of
cinchona
(esp.
Cinchona
Calisaya)
as a
bitter
white
crystalline
substance,
C20H24N2O2.
Hence,
by
extension
(Med.),
any of the salts of this
alkaloid,
as the
acetate,
chloride,
sulphate,
etc.,
employed
as a
febrifuge
or
antiperiodic.
Called
also
quinia,
quinina,
etc..
Pilocarpine
::
Pilocarpine
(n.) An
alkaloid
extracted
from
jaborandi
(Pilocarpus
pennatifolius)
as a white
amorphous
or
crystalline
substance
which has a
peculiar
effect
on the
vasomotor
system.
Hygrine
::
Hygrine
(n.) An
alkaloid
associated
with
cocaine
in coca
leaves
(Erythroxylon
coca),
and
extracted
as a
thick,
yellow
oil,
having
a
pungent
taste and
odor..
Gelsemine
::
Gelsemine
(n.) An
alkaloid
obtained
from the
yellow
jasmine
(Gelsemium
sempervirens),
as a
bitter
white
semicrystalline
substance;
--
called
also
gelsemia..
Cocaine
::
Cocaine
(n.) A
powerful
alkaloid,
C17H21NO4,
obtained
from the
leaves
of coca. It is a
bitter,
white,
crystalline
substance,
and is
remarkable
for
producing
local
insensibility
to
pain..
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