mass spectrum

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mass spectrum

[′mas ′spek·trəm]
(particle physics)
A plot of masses of elementary particles, including unstable states. Also known as particle spectrum.
(physics)
A display, record, or plot of the distribution in mass, or in mass-to-charge ratio, of ionized atoms, molecules, or molecular fragments.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.