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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
(n.) An
organic
base,
especially
one of a class of
substances
occurring
ready
formed
in the
tissues
of
plants
and the
bodies
of
animals..
Lern More About Alkaloid
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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..
Nicotine
::
Nicotine
(n.) An
alkaloid
which is the
active
principle
of
tobacco.
It is a
colorless,
transparent,
oily
liquid,
having
an acrid odor, and an acrid
burning
taste.
It is
intensely
poisonous..
Ergotine
::
Ergotine
() A
powerful
astringent
alkaloid
extracted
from ergot as a
brown,
amorphous,
bitter
substance.
It is used to
produce
contraction
of the
uterus..
Meconin
::
Meconin
(n.) A
substance
regarded
as an
anhydride
of
meconinic
acid,
existing
in opium and
extracted
as a white
crystalline
substance.
Also
erroneously
called
meconina,
meconia,
etc., as
though
it were an
alkaloid..
Antipyrine
::
Antipyrine
(n.) An
artificial
alkaloid,
believed
to be
efficient
in
abating
fever..
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..
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.
Aricine
::
Aricine
(n.) An
alkaloid,
first found in white
cinchona
bark..
Laburnine
::
Laburnine
(n.) A
poisonous
alkaloid
found in the
unripe
seeds of the
laburnum.
Lanthopine
::
Lanthopine
(n.) An
alkaloid
found in opium in small
quantities,
and
extracted
as a white
crystalline
substance..
Emetine
::
Emetine
(n.) A white
crystalline
bitter
alkaloid
extracted
from
ipecacuanha
root, and
regarded
as its
peculiar
emetic
principle..
Kairine
::
Kairine
(n.) A pale buff or white
crystalline
alkaloid
derived
from
quinoline,
and used as an
antipyretic
in
medicine..
Alkaloidal
::
Alkaloidal
(a.)
Pertaining
to,
resembling,
or
containing,
alkali..
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..
Dispoline
::
Dispoline
(n.) One of
several
isomeric
organic
bases of the
quinoline
series
of
alkaloids.
Ecboline
::
Ecboline
(n.) An
alkaloid
constituting
the
active
principle
of
ergot;
-- so named from its power of
producing
abortion.
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..
Verine
::
Verine
(n.) An
alkaloid
obtained
as a
yellow
amorphous
substance
by the
decomposition
of
veratrine.
Juglandine
::
Juglandine
(n.) An
alkaloid
found in the
leaves
of the
walnut
(Juglans
regia).
Physostigmine
::
Physostigmine
(n.) An
alkaloid
found in the
Calabar
bean (the seed of
Physostigma
venenosum),
and
extracted
as a
white,
tasteless,
substance,
amorphous
or
crystalline;
--
formerly
called
eserine,
with which it was
regarded
as
identical..
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