mass spectrum

https://doi.org/10.1351/goldbook.M03749
A spectrum which is obtained when a beam of ions is separated according to the mass-to-charge (m/z) ratios of the ionic species contained within it.
Source:
PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1550 (https://doi.org/10.1351/pac199163101541)