/ Dictionary / Index L long-lasting: Meaning and Definition of Find definitions for: long-last•ing Pronunciation: (lông'las'ting, -lä'sting, long'-), [key] — adj. enduring or existing for a long period of time: a long-lasting friendship. effective for a relatively long period of time: a long-lasting pain reliever. resisting the effects of wear or use over a long period: a long-lasting fabric used for work clothes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: long-lasting (Thesaurus) long jumper longleaf pine Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language