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allowed

[uh-loud]
adjective
  1. Physics. involving a change in quantum numbers, permitted by the selection rules: allowed transition.
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Origin of allowed

Related formsun·al·lowed, adjective
Can be confusedallowed allude aloud elude
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for unallowed

Historical Examples

  • These unallowed practices are, at the same place, contrasted with true leechcraft, the skill of a doctor: comp.

    Selections from Early Middle English 1130-1250: Part II: Notes

    Various

  • He would needs, by his usual power, have a thing allowed him which by the laws was unallowed.

  • And love unsanctioned, unallowed—perhaps forbidden, by some one who has ascendancy over her.

    The Death Shot

    Mayne Reid


Word Origin and History for unallowed

allowed

adj.

late 14c., "praised;" mid-15c., "assigned as a due share;" late 15c., "permitted," past participle adjective from allow.

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Online Etymology Dictionary, © 2010 Douglas Harper