(transitive, law) To make legally invalid. / To prevent from happening. / To make of no use or value; to cancel out.

present participle of nullify

The act or process by which something is nullified.

plural of nullifying

Able, or allowed to be nullified.

simple past tense and past participle of nullify

That has been declared null / (computing) Whose value has been set to null

Third-person singular simple present indicative form of nullify

plural of nullifier

One who, or that which, nullifies.