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energy
noun
-
energy
,
energies
the
physical
or
mental
strength
you
have
to
do
things
without
getting
tired
•
After
a
good
night
’
s
sleep
,
Maria
felt
full
of
energy
and
was
eager
to
catch
the
bus
to
school
.
After
a
good
night
’
s
sleep
,
Maria
felt
full
of
energy
and
was
eager
to
catch
the
bus
to
school
.
•
The
children
raced
around
the
playground
,
burning
off
their
extra
energy
.
The
children
raced
around
the
playground
,
burning
off
their
extra
energy
.
From
Middle
French
énergie
,
from
Late
Latin
energia
,
from
Ancient
Greek
energeia
meaning
‘
activity
,
operation
’.
noun
-
energy
,
energies
power
such
as
electricity
,
heat
,
or
fuel
that
can
be
used
to
make
machines
work
or
to
provide
light
and
heat
•
Solar
panels
on
the
roof
turn
sunlight
into
energy
for
the
house
.
Solar
panels
on
the
roof
turn
sunlight
into
energy
for
the
house
.
•
The
city
is
working
to
cut
down
on
energy
use
during
peak
hours
.
The
city
is
working
to
cut
down
on
energy
use
during
peak
hours
.
noun
-
energy
,
energies
in
physics
,
the
measurable
quantity
that
expresses
the
ability
of
a
system
to
do
work
,
usually
measured
in
joules
•
Kinetic
energy
increases
with
the
square
of
an
object
’
s
speed
.
Kinetic
energy
increases
with
the
square
of
an
object
’
s
speed
.
•
Einstein
’
s
famous
equation
relates
mass
to
energy
.
Einstein
’
s
famous
equation
relates
mass
to
energy
.
noun
-
energy
,
energies
a
general
feeling
or
mood
that
a
person
,
place
,
or
situation
seems
to
give
you
•
The
café
has
a
warm
,
welcoming
energy
that
makes
people
stay
for
hours
.
The
café
has
a
warm
,
welcoming
energy
that
makes
people
stay
for
hours
.
•
He
carries
a
calm
energy
that
puts
everyone
at
ease
.
He
carries
a
calm
energy
that
puts
everyone
at
ease
.
