noun
: an apparatus for separating a stream of charged particles into a mass spectrum (as by magnetic or electric fields) usually with photographic recording of the data and for thereby determining especially the masses of isotopes
noun
: an apparatus for separating a stream of charged particles into a mass spectrum (as by magnetic or electric fields) usually with photographic recording of the data and for thereby determining especially the masses of isotopes
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012