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insulator
noun
a
material
or
device
that
does
not
readily
conduct
heat
,
electricity
,
or
sound
.
•
Rubber
makes
a
good
insulator
for
electrical
wires
.
Rubber
makes
a
good
insulator
for
electrical
wires
.
•
The
house
has
fiberglass
insulator
in
the
walls
to
keep
it
warm
.
The
house
has
fiberglass
insulator
in
the
walls
to
keep
it
warm
.
Early
19th
century
:
formed
irregularly
from
insulate
,
on
the
pattern
of
conductor
.
insulation
noun
a
material
or
substance
used
for
preventing
the
loss
or
entry
of
heat
,
electricity
,
or
sound
.
•
The
attic
needs
more
insulation
to
keep
the
house
warm
during
winter
.
The
attic
needs
more
insulation
to
keep
the
house
warm
during
winter
.
•
Sound
insulation
between
the
rooms
stops
the
music
from
being
too
loud
.
Sound
insulation
between
the
rooms
stops
the
music
from
being
too
loud
.
From
'insulate'
+
'-ion'
;
'insulate'
from
Latin
'insulatus'
,
past
participle
of
'insulāre'
(
'to
make
into
an
island'
),
from
'insula'
(
'island'
),
because
it
isolates
like
an
island
.
noun
a
non-conducting
covering
for
electric
wires
and
equipment
that
protects
against
electric
shock
.
•
The
electrician
checked
the
wire
insulation
for
any
damage
.
The
electrician
checked
the
wire
insulation
for
any
damage
.
•
Damaged
insulation
on
the
cable
can
cause
a
short
circuit
.
Damaged
insulation
on
the
cable
can
cause
a
short
circuit
.
From
'insulate'
+
'-ion'
;
'insulate'
from
Latin
'insulatus'
,
past
participle
of
'insulāre'
(
'to
make
into
an
island'
),
from
'insula'
(
'island'
).
insulate
verb
-
insulate
,
insulating
,
insulates
,
insulated
cover
or
protect
something
with
a
material
that
prevents
electricity
,
heat
,
or
sound
from
escaping
or
entering
.
•
Homeowners
insulate
their
attic
to
keep
the
house
warm
in
winter
.
Homeowners
insulate
their
attic
to
keep
the
house
warm
in
winter
.
•
The
electrician
insulates
all
the
wires
before
connecting
them
.
The
electrician
insulates
all
the
wires
before
connecting
them
.
Mid
16th
century
:
from
Latin
insulatus
‘
made
into
an
island
’,
from
insula
‘
island
’,
later
developing
the
sense
of
surrounding
or
isolating
as
an
island
is
from
the
mainland
.
verb
-
insulate
,
insulating
,
insulates
,
insulated
protect
someone
or
something
from
unpleasant
experiences
or
harmful
influences
.
•
Parents
try
to
insulate
young
children
from
scary
news
.
Parents
try
to
insulate
young
children
from
scary
news
.
•
The
spokesperson
insulates
the
politician
from
tough
questions
.
The
spokesperson
insulates
the
politician
from
tough
questions
.
Mid
16th
century
:
from
Latin
insulatus
‘
made
into
an
island
’,
from
insula
‘
island
’,
later
developing
the
sense
of
surrounding
or
isolating
as
an
island
is
from
the
mainland
.
