multiplet line

multiplet

[muhl-tuh-plet, -plit]
noun Physics.
a group of several related spectral lines, usually of nearly the same wavelengths.
Also called multiplet line.


Origin:
1920–25; multi- + (tri)plet

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World English Dictionary
multiplet (ˈmʌltɪˌplɛt, -plɪt)
 
n
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
 
[from multiple; on the model of doublet]

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