Bedeutung von “nullify” — Learner’s Dictionary

nullify

verb [ T ] us uk /ˈnʌlɪfaɪ/ formal
LOSE EFFECT

to make something lose its effect:

Advances in medicine have nullified the disease's effect.
LEGAL

to say officially that something has no legal power:

The judge could nullify the entire trial.

(Definition von “nullify” aus dem Cambridge Learner's Dictionary © Cambridge University Press)