quantum numberEnglishOxford New American Dictionaryquantum number /ˈkwän(t)əm ˈnəmbər, ˈkwɑn(t)əm ˈnəmbər/ ▸ noun Physics a number which occurs in the theoretical expression for the value of some quantized property of a subatomic particle, atom, or molecule and can only have certain integral or half-integral values.
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