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expiration

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expiration/ˌɛkspəˈreɪʃən/noun
expiration
/ˌɛkspəˈreɪʃən/
noun
Learner's definition of EXPIRATION  
[noncount]
: the fact of coming to an end or no longer being valid after a period of time : the fact of expiring
medical  : the act of breathing out
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