EXPIRED definition: 1. past simple and past participle of expire 2. If something that lasts for a fixed length of time…. Learn more. Definitions of expired adjective having come to an end or become void after passage of a period of time “an expired passport” “caught driving with an expired license” synonyms: invalid The meaning of EXPIRE is to breathe one's last breath : die. How to use expire in a sentence. Here is my professional guide on what happens if you eat expired food, including the science behind expiration dates, the symptoms of food poisoning, and a food-by-food safety breakdown. EXPIRED meaning: 1. past simple and past participle of expire 2. If something that lasts for a fixed length of time…. Learn more. If something — like milk or a free shipping coupon — expires, it is no longer usable or valid. When you expire, you will be dead. The verb expire comes from the Latin expirare, meaning “breathe out,” and the modern use retains that ancient meaning. 1. To come to an end; terminate: My membership in the club has expired. 2. To breathe one's last breath; die: The patient expired early this morning. 3. To exhale; breathe out. The meaning of EXPIRED is dead, deceased —often used as a euphemistic or humorous alternative to dead. How to use expired in a sentence. expired that is no longer valid that has been breathed out dead EXPIRED definition: past participle of expire. and past tense form of expire. See examples of expired used in a sentence.