Definition of mass spectrometer in English:

mass spectrometer

Line breaks: mass spec|trom¦eter

noun

  • An apparatus for measuring the masses of isotopes, molecules, and molecular fragments by ionizing them and determining their trajectories in electric and magnetic fields.
    More example sentences
    • The gas chromatograph separates the substances present, and then each substance is broken into molecular fragments by the mass spectrometer.
    • It may even carry an instrument like a mass spectrometer to measure material ejected from impact.
    • The emitted isotopes are focussed through a mass spectrometer and measured.

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