selection rule - WordReference.com Dictionary of English

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  - sejant
  - Sekt
  - selachian
  - seladang
  - selah
  - seldom
  - select
  - select committee
  - selection
  - selection rule
  - selectional
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  - selenite
  - selenium
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selection rule

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Concise Oxford English Dictionary © 2008 Oxford University Press:
selection rule

▶noun Physics a rule which describes whether particular quantum transitions in an atom or molecule are allowed or forbidden.

'selection rule' also found in these Oxford entries:

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