expiration

noun7

1. •
   An act, process, or instance of expiring.
2. •
   Any other (metaphorically comparable) cessation, extinction, or ending.
3. •
   (euphemistic) The last emission of breath; thus, synonym of death.
4. •
   The act or process of breathing out, or forcing air from the lungs through the nose or mouth.

   • crackles heard on expiration
5. •
   A single outward breath.
6. •
   Other similar release of volatile matter.
7. •
   That which is produced by breathing out, as a sound.