(zoology) A circular band formed by two transverse grooves in the cuticle of some nematodes with consequent apparent segmentation; annulus.

plural of annuler

The person or authority that annuls.

plural of annule

(transitive) To formally revoke the validity of. / (transitive) To dissolve (a marital union) on the grounds that it is not valid.

An act or instance of annulling. / The state of having been annulled. / (law) An invalidation of something, especially a legal contract.

present participle of annul

An annulment.

simple past tense and past participle of annul

Third-person singular simple present indicative form of annul