Definition of "persistent" in English

adjective

1. Obstinately refusing to give up or let go.

   • She has had a persistent cough for weeks.

2. Insistently repetitive.

   • There was a persistent knocking on the door.

3. Indefinitely continuous.

   • There have been persistent rumours for years.

4. (botany) Lasting past maturity without falling off.

   • Pine cones have persistent scales.

5. (computing) Of 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. (mathematics) Describing a fractal process that has a positive Brown function

7. (mathematics, stochastic processes, of a state) non-transient.