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coefficient
noun
a
number
that
is
multiplied
by
a
variable
in
an
algebraic
expression
,
such
as
the
3
in
3x
•
In
the
equation
4x
+
7
,
the
number
4
is
the
coefficient
of
x
.
In
the
equation
4x
+
7
,
the
number
4
is
the
coefficient
of
x
.
•
The
teacher
asked
Maya
to
divide
each
term
by
its
coefficient
.
The
teacher
asked
Maya
to
divide
each
term
by
its
coefficient
.
Mid-18th
century
:
from
co-
‘
jointly
’
+
efficient
,
originally
in
the
sense
‘
accomplishing
,
producing
’.
noun
a
measured
number
that
shows
how
strongly
or
how
much
one
thing
influences
or
relates
to
another
,
such
as
the
coefficient
of
friction
or
a
correlation
coefficient
•
Winter
tyres
grip
better
because
rubber
with
a
higher
coefficient
of
friction
sticks
to
the
road
.
Winter
tyres
grip
better
because
rubber
with
a
higher
coefficient
of
friction
sticks
to
the
road
.
•
Engineers
calculated
the
drag
coefficient
to
design
a
faster
car
.
Engineers
calculated
the
drag
coefficient
to
design
a
faster
car
.
Mid-18th
century
:
from
co-
‘
jointly
’
+
efficient
,
referring
to
quantities
that
work
together
.
