Last Updated：2025/11/20
(physics, analytical chemistry) An analytical technique that measures the mass / charge ratio of the ions formed when a molecule or atom is ionized, vaporized and introduced into a vacuum. Mass spectrometry may also involve breaking molecules into fragments - thus enabling its structure to be determined.
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mass spectrometry
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Source Word
mass spectrometry
Noun
countable
uncountable
(physics,
analytical
chemistry)
An
analytical
technique
that
measures
the
mass
/
charge
ratio
of
the
ions
formed
when
a
molecule
or
atom
is
ionized,
vaporized
and
introduced
into
a
vacuum.
Mass
spectrometry
may
also
involve
breaking
molecules
into
fragments
-
thus
enabling
its
structure
to
be
determined.
Japanese Meaning
質量分析法 – 分子や原子をイオン化し、そのイオンの質量対電荷比を測定することで、化学・物理学的特性や構造を分析する技術。 / 分子のフラグメント化を利用し、構造決定や定量分析に応用される解析手法。
Sense（1）
(physics,
analytical
chemistry)
An
analytical
technique
that
measures
the
mass
/
charge
ratio
of
the
ions
formed
when
a
molecule
or
atom
is
ionized,
vaporized
and
introduced
into
a
vacuum.
Mass
spectrometry
may
also
involve
breaking
molecules
into
fragments
-
thus
enabling
its
structure
to
be
determined.
（ plural ）
