Share this entry
mass spectrometer Syllabification: mass spec·trom·e·ter
Pronunciation: /ˈˌmas ˌspekˈträmədər/

Definition of mass spectrometer in English:


An apparatus for separating isotopes, molecules, and molecular fragments according to mass. The sample is vaporized and ionized, and the ions are accelerated in an electric field and deflected by a magnetic field into a curved trajectory that gives a distinctive mass spectrum.
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.
Definition of mass spectrometer in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources