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Webster 1913 Edition


Expiration

Exˊpi-ra′tion

,
Noun.
[L.
expiratio
,
exspiratio
: cf. F.
expiration
. See
Expire
.]
1.
The act of expiring
; as:
(a)
(Physiol.)
The act or process of breathing out, or forcing air from the lungs through the nose or mouth;
as, respiration consists of inspiration and
expiration
; – opposed to
inspiration
.
(b)
Emission of volatile matter; exhalation.
(d)
A coming to a close; cessation; extinction; termination; end.
Before the
expiration
of thy time.
Shakespeare
2.
That which is expired; matter breathed forth; that which is produced by breathing out, as a sound.
The aspirate “he,” which is . . . a gentle
expiration
.
G. Sharp.

Webster 1828 Edition


Expiration

EXPIRA'TION

,
Noun.
[L. expiratio, from expiro. See Expire.]
1.
The act of breathing out, or forcing the air from the lungs. Respiration consists of expiration and inspiration.
2.
The last emission of breath; death.
3.
The emission of volatile matter from any substance; evaporation; exhalation; as the expiration of warm air from the earth.
4.
Matter expired; exhalation; vapor; fume.
5.
Cessation; close; end; conclusion; termination of a limited time; as the expiration of a month or year; the expiration of a term of years; the expiration of a lease; the expiration of a contract or agreement.

Definition 2024


expiration

expiration

English

Noun

expiration (uncountable)

  1. The act of expiring.
  2. The act or process of breathing out, or forcing air from the lungs through the nose or mouth
    respiration consists of inspiration and expiration
  3. Emission of volatile matter; exhalation.
  4. (euphemistic) The last emission of breath; death.
  5. A cessation, extinction, ending
  6. That which is produced by breathing out, as a sound.

Usage notes

In most senses, mainly US; UK equivalent is expiry.

Synonyms

Antonyms

Derived terms

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Translations


French

Etymology

From Middle French expiration, a borrowing from Latin exspīrātiōnem, accusative singular of exspīrātiō.

Noun

expiration f (plural expirations)

  1. expiration (act of expiring)
  2. expiration (act of breathing out)
  3. expiration (end)

Related terms