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multiplet

[muhl-tuh-plet, -plit] /ˈmʌl təˌplɛt, -plɪt/
noun, Physics.
1.
a group of several related spectral lines, usually of nearly the same wavelengths.
Also called multiplet line.
Origin
1920-1925
1920-25; multi- + (tri)plet
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for multiplet line

multiplet

/ˈmʌltɪˌplɛt; -plɪt/
noun (physics)
1.
a set of closely spaced lines in a spectrum, resulting from small differences between the energy levels of atoms or molecules
2.
a group of related elementary particles that differ only in electric charge
Word Origin
from multiple; on the model of doublet
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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