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fundamental
noun
a
basic
principle
,
rule
,
or
fact
that
is
essential
to
understanding
something
•
Before
learning
algebra
,
you
must
master
the
fundamentals
of
basic
arithmetic
.
Before
learning
algebra
,
you
must
master
the
fundamentals
of
basic
arithmetic
.
•
The
professor
began
the
biology
course
by
explaining
the
fundamental
of
cell
theory
.
The
professor
began
the
biology
course
by
explaining
the
fundamental
of
cell
theory
.
same
as
adjective
sense
noun
the
lowest
natural
frequency
at
which
something
vibrates
,
producing
the
main
pitch
of
a
sound
•
The
fundamental
of
the
note
A
is
440
hertz
.
The
fundamental
of
the
note
A
is
440
hertz
.
•
You
can
hear
the
overtones
as
well
as
the
fundamental
when
the
guitar
string
is
plucked
.
You
can
hear
the
overtones
as
well
as
the
fundamental
when
the
guitar
string
is
plucked
.
technical
extension
of
the
general
noun
sense
to
acoustics
and
physics
