expiration date

noun

1

: the date after which something (such as a credit card) is no longer in effect

2

: the date after which a product (such as food or medicine) should not be sold because of an expected decline in quality or effectiveness

Examples of expiration date in a Sentence

Check the expiration date on the bottle to make sure the medicine is still good.

Recent Examples on the Web

Growing up in a family of seven, a container of milk never lasted long enough in our refrigerator to reach the expiration date. — Patricia S York, Southern Living, 22 June 2026

The school board extended the agreement by one year in 2024 and again in 2025, pushing the expiration date to June 30, 2029. — Nora O'Neill, Charlotte Observer, 18 June 2026

The expiration date of the new contract is 27 years after the first contract between the two entities was executed in 2004, soon after the city’s incorporation. — Camryn Dadey, Sacbee.com, 16 June 2026

Many previous estimates had put life’s expiration date at less than 1 billion years from now. — Scott K. Johnson, ArsTechnica, 15 June 2026

Word History

First Known Use

1887, in the meaning defined at sense 1

Rhymes for expiration date

• borosilicate
• decontaminate
• deoxycholate
• deteriorate
• differentiate
• diisocyanate
• dinoflagellate
• excommunicate
• incapacitate
• insubordinate
• intercorporate
• interpenetrate

Kids Definition

expiration date

noun

1

: the date on which something (as a credit card) is no longer of use

2

: the last date on which a product (as food or medicine) can be safely used