(law) a formal termination (of a relationship or a judicial proceeding etc)
the act of abrogating; an official or legal cancellation
例句
用作名词(n.)
The limits of authority for approving the annulment of a reserve rank shall be the same as those for approving the conferment of the rank.批准取消预备役军官军衔的权限，与批准授予该级预备役军官军衔的权限相同。
Generally, annulment is easier if the marriage is unconsummated.一般来说，如果婚姻并不美满，宣告婚姻无效就比较容易。
