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Picture Dictionary
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π
function
noun
the
job
or
purpose
that
something
has
or
is
made
to
do
β’
The
main
function
of
a
refrigerator
is
to
keep
food
cold
.
The
main
function
of
a
refrigerator
is
to
keep
food
cold
.
β’
A
smartphone
has
many
functions
,
including
taking
photos
and
browsing
the
web
.
A
smartphone
has
many
functions
,
including
taking
photos
and
browsing
the
web
.
From
Latin
β
functio
β
meaning
β
performance
,
execution
,β
derived
from
β
fungi
β
β
to
perform
.
noun
a
large
formal
social
event
such
as
a
party
,
ceremony
,
or
official
gathering
β’
They
booked
a
hotel
ballroom
for
the
wedding
function
.
They
booked
a
hotel
ballroom
for
the
wedding
function
.
β’
He
wore
a
tuxedo
to
the
charity
function
last
night
.
He
wore
a
tuxedo
to
the
charity
function
last
night
.
Sense
of
β
social
event
β
arose
in
the
mid-19th
century
from
the
idea
of
people
meeting
to
perform
an
official
purpose
.
verb
-
function
,
functioning
,
functions
,
functioned
to
work
or
operate
in
the
correct
or
intended
way
β’
After
the
repair
,
the
old
radio
finally
functioned
again
.
After
the
repair
,
the
old
radio
finally
functioned
again
.
β’
Without
batteries
,
the
toy
car
cannot
function
.
Without
batteries
,
the
toy
car
cannot
function
.
Verb
sense
recorded
from
the
late
17th
century
,
from
the
noun
meaning
β
to
perform
a
duty
.β
noun
a
rule
in
mathematics
that
links
every
input
value
to
exactly
one
output
value
β’
The
equation
y
=
2x
shows
a
linear
function
with
a
constant
slope
.
The
equation
y
=
2x
shows
a
linear
function
with
a
constant
slope
.
β’
Students
plotted
the
quadratic
function
on
graph
paper
.
Students
plotted
the
quadratic
function
on
graph
paper
.
Adopted
into
mathematical
language
in
the
17th
century
by
Leibniz
to
describe
dependent
quantities
.
noun
a
named
block
of
computer
code
that
performs
a
specific
action
when
it
is
called
β’
In
Python
,
the
"
print
()"
function
displays
text
on
the
screen
.
In
Python
,
the
"
print
()"
function
displays
text
on
the
screen
.
β’
They
wrote
a
function
to
calculate
the
total
price
of
all
items
in
the
cart
.
They
wrote
a
function
to
calculate
the
total
price
of
all
items
in
the
cart
.
Borrowed
into
computing
in
the
mid-20th
century
,
extending
the
mathematical
sense
to
pieces
of
executable
code
.
functional
adjective
working
or
able
to
operate
as
intended
β’
After
the
storm
,
only
one
functional
flashlight
remained
in
the
house
.
After
the
storm
,
only
one
functional
flashlight
remained
in
the
house
.
β’
The
old
printer
is
still
functional
,
so
we
don
β
t
need
a
new
one
yet
.
The
old
printer
is
still
functional
,
so
we
don
β
t
need
a
new
one
yet
.
From
function
+
β-al
,
first
recorded
in
the
19th
century
referring
to
things
that
perform
a
function
.
adjective
designed
mainly
for
practical
use
rather
than
for
looks
β’
The
apartment
β
s
dΓ©cor
is
simple
and
functional
,
with
shelves
that
fold
into
the
wall
.
The
apartment
β
s
dΓ©cor
is
simple
and
functional
,
with
shelves
that
fold
into
the
wall
.
β’
She
chose
a
functional
backpack
with
many
pockets
for
her
hiking
trip
.
She
chose
a
functional
backpack
with
many
pockets
for
her
hiking
trip
.
Sense
evolved
in
20th-century
design
movements
that
valued
purpose
over
decoration
.
noun
a
mathematical
rule
that
takes
a
whole
function
as
its
input
and
returns
a
single
number
β’
In
calculus
class
,
we
learned
how
a
functional
maps
a
curve
to
a
single
number
.
In
calculus
class
,
we
learned
how
a
functional
maps
a
curve
to
a
single
number
.
β’
The
physicist
used
an
energy
functional
to
predict
the
system
β
s
behavior
.
The
physicist
used
an
energy
functional
to
predict
the
system
β
s
behavior
.
Coined
in
the
late
19th
century
from
function
+
β-al
to
describe
objects
in
the
calculus
of
variations
.