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variable
noun
a
factor
,
quantity
,
or
symbol
that
can
change
,
especially
a
letter
representing
an
unknown
number
in
mathematics
or
something
that
can
be
altered
in
an
experiment
•
In
the
equation
2x
+
3
=
11
,
the
letter
x
is
the
variable
you
must
solve
for
.
In
the
equation
2x
+
3
=
11
,
the
letter
x
is
the
variable
you
must
solve
for
.
•
Temperature
was
the
only
variable
in
the
experiment
;
everything
else
stayed
the
same
.
Temperature
was
the
only
variable
in
the
experiment
;
everything
else
stayed
the
same
.
Borrowed
from
medieval
Latin
‘
variabilis
’
in
the
mathematical
sense
in
the
late
17th
century
,
extending
the
earlier
adjective
meaning
to
a
noun
for
things
that
can
change
.
