/ Dictionary / Index L longstanding: Meaning and Definition of Find definitions for: long•stand•ing Pronunciation: (lông'stan'ding, long'-), [key] — adj. existing or occurring for a long time: a longstanding feud. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: longstanding (Thesaurus) longspur long-stemmed Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language