selection rule

noun

Any of several general rules concerning the transitions between the states of a quantum mechanical system; they derive from the symmetry properties of the states and of their interactions

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Meanings

nounselection rule (plural selection rules)

plural selection rules

  1. natural sciencesAny of several general rules concerning the transitions between the states of a quantum mechanical system; they derive from the symmetry properties of the states and of their interactions
Cite this entry
APA

selection rule. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/selection%20rule

MLA

“selection rule.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/selection%20rule. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “selection rule,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/selection%20rule.

Source: selection rule on Wiktionary, CC BY-SA 4.0.