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📅 End of validity 🕊️ Death 😮‍💨 Breathing out
expiration

expiration

1 4.8
To breathe out air from the lungs
  • noun
  • /ˌɛkspəˈreɪʃən/
  • Specialized
translation icon : espiración
  • The Valsalva maneuver involves performing forced nasal expiration with the nose and lips closed.
  • inspiration and expiration
  • forced expiration

Examples

  • You can measure your lung function by counting how many seconds you can hold after each expiration.

  • If the police have physical custody of a particular credit card, they already have access to the name, credit card number, and expiration date embossed on the card itself.

    Academic text (2017)

  • Much of this variability is determined by the action of breathing: the pulse speeds up with inspiration and slows down with expiration.

    Academic text (2014)

  • The aerosols are collected during expiration on a mouth filter, which will be compared to previous samples to determine if there is any airway remodeling inside the lungs.

    Academic text (2017)

  • End expiration also lessens the effects of tracheal tug, which stabilizes and prevents upper airway collapse.

    Academic text (1999)

  • During yoga practice, she focused on her breathing and felt a sense of calm with each expiration.

  • The doctor explained that proper expiration is essential for efficient breathing.

Synonyms

exhalation
vsexpiration
6 4.3

Breathing out air from the lungs or the air that you breathe out

is the ongoing process of sending air out rather than the air itself
breathing out
vsexpiration
1 1.0

To push air out of your lungs

is the broader process term rather than a single expulsive action

Antonyms

inhalation
  • Specialized
24 4.1

Breathing air or gas into the lungs

Compounds

expiration date
  • US
34 2.2

The last day you should use food, medicine, or other items

How Forceful

to blow
711 1.0
to sigh
80 1.9
expiration
  • Specialized
1 4.8
puff
24 1.5
breath
∞ 1.0

Surface Forms

expiration singular
expirations plural

Morphology

expiration = expire (semi-transparent) = expire + ation

Nominalization of 'expire' in its 'breathe out' sense; because that verb sense is less frequent, learners may not immediately infer this meaning.

Etymology

Expiration comes from Latin ex- 'out' and spirare 'to breathe', and is the same root as respire and inspire. That is why expiration means the act of 'breathing out' air from the lungs.