[spec.trom.e.ter] n [ISV] (1874) 1: an instrument used for measuring wavelengths of light spectra
2: any of various analytical instruments in which an emission (as of particles or radiation) is dispersed according to some property (as mass or energy) of the emission and the amount of dispersion is measured "nuclear magnetic resonance ~" -- spec.tro.met.ric adj -- spec.trom.e.try n