What is the meaning of Persistent?

Obstinately refusing to give up or let go.

Insistently repetitive.

Indefinitely continuous.

Lasting past maturity without falling off.

Of data or a data structure: not transient or temporary, but remaining in existence after the termination of the program that creates it.

Describing a fractal process that has a positive Brown function

non-transient.

persistent

third-person plural present indicative/subjunctive of persister

third-person plural future active indicative of persistō

persistent

Source: wiktionary.org