Definitions
1.adjectiveObstinately refusing to give up or let go."She has had a persistent cough for weeks."
2.adjectiveInsistently repetitive."There was a persistent knocking on the door."
3.adjectiveIndefinitely continuous."There have been persistent rumours for years."
4.adjectiveLasting past maturity without falling off."Pine cones have persistent scales."
5.adjectiveOf data or a data structure: not transient or temporary, but remaining in existence after the termination of the program that creates it."Once written to a disk file, the data becomes persistent: it will still be there tomorrow when we run the next program."
6.adjectiveDescribing a fractal process that has a positive Brown function
7.adjective(stochastic processes, of a state) non-transient.