idempotence

Etymology
roots, – literally, “the quality of having the same power”.

Coined by 19th century American mathematician in context of algebra.

Noun

 * 1)  A quality of an action such that repetitions of the action have no further effect on outcome – being idempotent.

Translations

 * Finnish:
 * French:
 * Greek: ταυτοδυναµία
 * Hungarian:
 * Macedonian: идемпотенција
 * Russian:
 * Spanish: idempotencia