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pollution
noun
-
pollution
harmful
substances
,
noise
,
or
other
forms
of
waste
that
make
air
,
water
,
or
land
dirty
or
unhealthy
•
The
thick
smog
over
the
city
showed
how
bad
the
pollution
had
become
.
The
thick
smog
over
the
city
showed
how
bad
the
pollution
had
become
.
•
Farmers
tested
the
soil
for
pollution
before
planting
their
crops
.
Farmers
tested
the
soil
for
pollution
before
planting
their
crops
.
from
Latin
polluere
‘
to
soil
,
defile
’,
through
Old
French
pollution
and
Middle
English
pollution
noun
-
pollution
the
act
or
process
of
making
air
,
water
,
or
land
dirty
or
unhealthy
•
The
pollution
of
the
river
began
when
the
factory
started
dumping
waste
.
The
pollution
of
the
river
began
when
the
factory
started
dumping
waste
.
•
Strict
laws
aim
to
reduce
the
pollution
of
the
atmosphere
.
Strict
laws
aim
to
reduce
the
pollution
of
the
atmosphere
.
from
Latin
polluere
‘
to
soil
,
defile
’,
through
Old
French
pollution
and
Middle
English
pollution