mass spectrometer is a noun meaning "spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer". It carries one recorded sense.
spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer
Definitions, synonyms and semantic relations for mass spectrometer come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.