Chlorophyll
Definition of Chlorophyll
Chlo´ro`phyll
n.
1.
(Bot.)
Literally
,
leaf
green
;
a
green
granular
matter
formed
in
the
cells
of
the
leaves
(
and
other
parts
exposed
to
light
)
of
plants
,
to
which
they
owe
their
green
color
,
and
through
which
all
ordinary
assimilation
of
plant
food
takes
place
.
Similar
chlorophyll
granules
have
been
found
in
the
tissues
of
the
lower
animals
.
2.
any
of
a
group
of
green
pigments
found
in
photosynthetic
organisms
.
Chlorophyll
a
and
chlorophyll
b
are
found
in
higher
plants
and
green
algae
;
chlorophyll
c
is
found
in
certain
types
of
marine
algae
.
Chemically
,
it
has
a
porphyrin
ring
with
a
magnesium
ion
bound
to
the
four
central
nitrogens
,
and
has
a
phytyl
side
chain
.
It
is
essential
for
photosynthesis
in
most
plants
.
Chlorophyll
a
has
formula
C55H72N4O5Mg
.
Related Words
chlorophyl
,
chlorophyll
a
,
chlorophyll
b
,
pigment
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