Pronunciation key

( ik-spīr )


v.t. [EXPIRED (-spīrd), EXPIRING]

[ME. expiren < Fr. expirer; L. expirare, exspirare; ex-, out + spirare to breathe].

  1. To exhale, breathe out; as, air is expired from the lungs.
  2. Obs. to give off (an odor, etc).


  1. To breathe out air from the lungs.
  2. To breathe one's last breath; to die.
  3. To come to an end; terminate; stop; cease; as "His contract has expired."

Syn. see die


  • Webster's New World Dictionary of the American Language (College Edition) ©1955
  • The American Heritage Dictionary, Second College Edition ©1985
  • Further Reading

  • expiration
  • expiratory
  • expiry
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