expiry
noun (especially British English)(North American English usually expiration)
[uncountable]an ending of the period of time when an official document can be used, or when an agreement is legally acceptable （文件、协议等的）满期，届期，到期 the expiry of a fixed-term contract 定期合同的满期 - on expiry
The licence can be renewed on expiry. 执照期满时可延期。 Upon expiry of the policy, a new policy must be started. 策略到期后，必须启动新策略。 Your passport should be renewed before its expiry. 你的护照应该在到期前更新。
Oxford Collocations DictionaryExpiry is used before these nouns:- date