Definition from Wiktionary, the free dictionary
nullipotent (not comparable)
- (mathematics, computing) Describing an action which has no side effect. Queries are typically nullipotent: they return useful data, but do not change the data structure queried. Contrast with idempotent.
- (biology) Incapable of developing into any cell type; compare pluripotent
In computing, contrast with idempotent, meaning that doing it multiple times is the same as doing it once, rather than zero times, as is nullipotent.