Definition of joule
Pronunciation:
jŌl
n.
1.
(Physics.)
A
unit
of
work
which
is
equal
to
10
7
ergs
(
the
unit
of
work
in
the
C
.
G
.
S
.
system
of
units
),
and
is
equivalent
to
one
watt-second
,
the
energy
expended
in
one
second
by
an
electric
current
of
one
ampere
in
a
resistance
of
one
ohm
;
also
called
the
absolute
joule
.
It
is
abbreviated
J
or
j
.
The
international
joule
is
slightly
larger
,
being
1
.
000167
times
the
absolute
joule
.
The
absolute
joule
is
approximately
equal
to
0
.
737562
foot
pounds
,
0
.
239006
gram-calories
(
small
calories
),
and
3
.
72506
x
10
-7
horsepower-hours
,
and
0
.
000948451
B
.
t
.
u
.
Joule's equivalent
See
under
Equivalent
,
n
.
Related Words
energy
unit
,
erg
,
heat
unit
,
J
,
watt
second
,
work
unit
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