Definitions for outlastˌaʊtˈlæst, -ˈlɑst
Random House Webster's College Dictionary
to endure or last longer than.
to live longer than; outlive.
Origin of outlast:
outlive, outlast, survive(verb)
live longer than
"She outlived her husband by many years"
Kernerman English Learner's Dictionary
to last longer than
His music has outlasted most of his contemporaries.
to live, last or remain longer than something else
Some think that classical music will outlast pop.