Annulment

n. cancellation; act of putting an end to

Annulment is a legal procedure for declaring a marriage null and void. Unlike divorce, it is retroactive: an annulled marriage is considered never to have existed.In strict legal terminology, annulment refers only to making a voidable marriage null; if the marriage is void ab initio, then it is automatically null, although a legal declaration of nullity is required to establish this. The process of obtaining such a declaration is similar to the annulment process.
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Noun
1. the state of being cancelled or annulled
(synonym) revocation
(hypernym) state
2. (law) a formal termination (of a relationship or a judicial proceeding etc)
(synonym) invalidation
(hypernym) dissolution, breakup
(hyponym) dissolution of marriage
(derivation) invalidate, annul, quash, void, avoid, nullify
(classification) law, jurisprudence
3. the act of abrogating; an official or legal cancellation
(synonym) abrogation, repeal
(hypernym) cancellation
(hyponym) derogation
(derivation) revoke, annul, lift, countermand, reverse, repeal, overturn, rescind, vacate

(n.)
The act of annulling; abolition; invalidation.
  

To make void; to cancel an event or judicial proceeding both retroactively and for the future. - (read more on Annulment)