Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

expire

verb ex·pire \ik-ˈspī(ə)r, usually for intransitive verb 2 and transitive verb ek-\

Medical Definition of expire

ex·piredex·pir·ing

  1. intransitive verb

  2. 1:  to breathe one's last breath :  die

  3. 2:  to emit the breath

  4. transitive verb

  5. :  to breathe out from or as if from the lungs <the basal metabolism test…measures the amount of carbon dioxide expired by the lungs—J. D. Ratcliff>





Seen and Heard

What made you want to look up expire? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 11, 2016

the holder of an office

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

16.96 pounds 2.2 pounds 100 pounds 196.5 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ