/ Dictionary / Index A allowed: Meaning and Definition of Find definitions for: al•lowed Pronunciation: (u-loud'), [key] — adj. involving a change in quantum numbers, permitted by the selection rules: allowed transition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: allowed (Thesaurus) Alloway allowedly Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language