expiration
US /ˌek.spəˈreɪ.ʃən/
UK /ˌek.spəˈreɪ.ʃən/
1.
the end of the period for which something is valid
:
•
Please check the expiration date on the milk.
•
The passport's expiration is next month.
2.
the act of breathing out; exhalation
:
•
The doctor listened to his expiration.
•
Deep expiration helps to relax the body.