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carbon
noun
-
carbon
a
non-metal
chemical
element
(
symbol
C
)
that
appears
in
forms
such
as
diamond
and
graphite
and
is
present
in
all
living
things
•
Diamonds
are
made
entirely
of
carbon
.
Diamonds
are
made
entirely
of
carbon
.
•
Plants
take
in
carbon
from
the
air
during
photosynthesis
.
Plants
take
in
carbon
from
the
air
during
photosynthesis
.
From
Latin
carbo
“
coal
,
glowing
ember
,”
later
used
in
scientific
Latin
to
name
the
element
.
noun
a
duplicate
copy
of
a
document
made
with
carbon
paper
•
The
accountant
asked
for
a
carbon
of
each
invoice
.
The
accountant
asked
for
a
carbon
of
each
invoice
.
•
Can
you
hand
me
the
carbon
so
I
can
file
it
?
Can
you
hand
me
the
carbon
so
I
can
file
it
?
Short
for
“
carbon
copy
,”
from
the
carbon
paper
placed
between
sheets
when
typing
to
create
duplicates
.
noun
-
carbon
the
carbon
dioxide
released
by
human
activities
,
especially
discussed
when
talking
about
climate
change
•
We
are
trying
to
cut
our
carbon
by
cycling
to
work
.
We
are
trying
to
cut
our
carbon
by
cycling
to
work
.
•
The
company's
new
policy
aims
to
be
carbon
neutral
by
2030
.
The
company's
new
policy
aims
to
be
carbon
neutral
by
2030
.
Extension
of
the
chemical
term
,
using
“
carbon
”
to
stand
for
the
carbon
dioxide
gas
produced
by
burning
fossil
fuels
.
carbohydrate
noun
foods
containing
sugars
or
starches
,
or
the
nutrient
itself
,
that
the
body
breaks
down
to
get
energy
•
Bread
and
pasta
are
high
in
carbohydrate
,
which
helps
runners
keep
their
energy
up
.
Bread
and
pasta
are
high
in
carbohydrate
,
which
helps
runners
keep
their
energy
up
.
•
People
with
diabetes
often
monitor
how
much
carbohydrate
they
eat
at
each
meal
.
People
with
diabetes
often
monitor
how
much
carbohydrate
they
eat
at
each
meal
.
Sense
extended
from
the
chemical
term
to
the
dietary
nutrient
in
the
early
20th
century
.
noun
an
organic
compound
made
of
carbon
,
hydrogen
,
and
oxygen
that
living
things
use
for
energy
,
such
as
sugars
,
starches
,
and
cellulose
•
Glucose
,
a
simple
carbohydrate
,
fuels
many
of
the
body
’
s
basic
activities
.
Glucose
,
a
simple
carbohydrate
,
fuels
many
of
the
body
’
s
basic
activities
.
•
The
cellulose
in
plant
cell
walls
is
a
complex
carbohydrate
that
gives
stems
their
strength
.
The
cellulose
in
plant
cell
walls
is
a
complex
carbohydrate
that
gives
stems
their
strength
.
19th-century
scientific
coinage
from
‘
carbo-
’ (
carbon
)
+
‘
hydrate
’ (
compound
with
water
),
because
the
general
formula
was
thought
to
be
Cx
(
H2O
)
y
.