1. The act of abrogating; an official or legal cancellation
   "The annulment of the treaty caused tension between the two countries";
   - abrogation, repeal
    
2. (law) a formal termination (of a relationship or a judicial proceeding etc.)
   "The annulment of the marriage was granted by the court";
   - invalidation
    
3. The state of being cancelled or annulled
   "The annulment of the contract left both parties free of obligations";
   - revocation

Derived forms: annulments

Type of: breakup, cancelation [US, rare], cancellation, dissolution, state

Encyclopedia: Annulment