Definitions

1. verb

to become invalid or useless due to the passage of time or the occurrence of a specified event

“The coupon will expire at the end of the month.”

2. noun

the act of becoming invalid or useless due to the passage of time or the occurrence of a specified event

“The expiration of the contract led to a lawsuit.”

3. verb

to die or come to an end, especially in a dramatic or violent manner

“The star will expire in a supernova explosion.”

4. verb

to give up a right or privilege

“She will expire her membership at the end of the year.”