mass spectrumn.
/ˌmas ˈspɛktrəm/, U.S. /ˈˌmæs ˈspɛktrəm/ A recording obtained with a mass spectrograph or mass spectrometer, in which ions from a sample are represented as dispersed according to their mass-to-charge ratio.
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mass spectrum1920
the world > matter > physics > atomic physics > decomposition of light, spectrum > study of spectra > types of spectrometry or spectroscopy > [noun] > analysis of mass > instrument > producing photograph > record from
mass spectrum1920
1920 F. W. Aston in London, Edinb., & Dublin Philos. Mag. 6th Ser. 39 611 (heading) The mass-spectra of chemical elements.
1920 F. W. Aston in London, Edinb., & Dublin Philos. Mag. 6th Ser. 39 625 A positive ray spectrograph capable of giving a focussed mass-spectrum is..described.
1966 Encycl. Industr. Chem. Anal. II. 465 Mass spectra are related in a direct and simple way to molecular structure, thereby providing a unique and characteristic spectrum for each molecule which can be vaporized in the ion source.
1993 Nature 11 Nov. 123/1 Mass spectra of material sublimed from the recovered soot showed normal fullerenes.
This entry has been updated (OED Third Edition, December 2000; most recently modified version published online March 2022).
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n.1920