Dictionary

expire

verb ex·pire \ik-ˈspī(-ə)r, oftenest for vi 3 and vt 2 ek-\

: to end : to no longer be valid after a period of time

: to die

medical : to breathe out (air)

ex·piredex·pir·ing

Full Definition of EXPIRE

intransitive verb
1
:  to breathe one's last breath :  die
2
:  to come to an end
3
:  to emit the breath
transitive verb
1
obsolete :  conclude
2
:  to breathe out from or as if from the lungs
3
archaic :  emit

Examples of EXPIRE

  1. My driver's license has expired.
  2. She expired after a long illness.
  3. measuring the volume of air expired from the lungs

Origin of EXPIRE

Middle English, from Middle French or Latin; Anglo-French espirer to breathe out, from Latin exspirare, from ex- + spirare to breathe
First Known Use: 15th century

expire

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

Medical Definition of EXPIRE

intransitive verb
1
:  to breathe one's last breath :  die
2
:  to emit the breath
transitive verb
:  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>

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