expiration date
US /ˌek.spəˈreɪ.ʃən ˌdeɪt/
UK /ˌek.spəˈreɪ.ʃən ˌdeɪt/

1.
유통기한, 만료일
the date after which a product, especially food or medicine, should not be used because it may no longer be safe or effective
:
•
Always check the expiration date on perishable goods.
상하기 쉬운 물품의 유통기한을 항상 확인하세요.
•
The medicine passed its expiration date last month.
그 약은 지난달에 유통기한이 지났어.
2.
만료일, 유효기간
the date on which an agreement, contract, or official document ceases to be valid
:
•
The lease agreement has an expiration date of December 31st.
임대 계약은 12월 31일이 만료일이야.
•
Make sure to renew your passport before its expiration date.
여권 만료일 전에 갱신해야 해.