English Reference
adjective · noun

transient

adj. · n.
US /ˈtɹænʒənt/ UK /tɹˈænsiənt/ tran·sient UK spelling transients

  1. 01 C1 Advanced Academic

    adj.lasting for only a very short time before disappearing.

    adj.passing or disappearing with time; transitory or ephemeral in nature.

    Simple

    The city is famous for its transient population of students and tourists.

    In context

    The beauty of the cherry blossoms is famously transient, lasting only a few days before the petals are scattered by the wind.

    temporaryfleetingtransitory
  2. 02 C2 Proficiency Technical Science

    adj.describing a state or current that changes quickly before reaching a steady level.

    adj.relating to a state or variable that is changing, typically decaying exponentially, before reaching equilibrium.

    Simple

    The engineer measured the transient voltage when the machine first started.

    In context

    The system experienced a transient oscillation immediately following the power surge, but it stabilized within milliseconds.

    unsteadynon steady
    stablesteady state
  3. 03 C1 Advanced Formal

    n.a person who stays in a place for only a short time, like a traveler or worker.

    n.a person who passes through a place for a brief duration, such as a migrant worker or a temporary resident.

    Simple

    The small town had many transients who came to work during the harvest.

    In context

    The local shelter provides beds for transients who are moving between cities in search of seasonal employment.

  4. 04 C2 Proficiency Technical Computing

    n.a very quick, loud sound or a sudden burst of electricity.

    n.a brief, high-amplitude signal or surge, such as the initial attack of a drum hit or a momentary electrical spike.

    Simple

    The music producer used a special tool to control the transients of the snare drum.

    In context

    The circuit breaker was designed to handle minor transients without cutting off power to the entire building.

But, at the same time, Premier League shirts have become something almost transient, eye-wateringly expensive yet relevant for a vanishingly small amount of time.

The Guardian· 31 Aug 2026

There is a category of events called extragalactic fast X-ray transients (EFXTs): brief flashes of X-rays lasting minutes to hours whose origins are still poorly understood.

Phys.org· 16 Aug 2026

From Late Latin transiēnt- (for classical transeunt-), stem of transiēns, present participle of trānsīre (“to go over, to pass”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C1 · Advanced
Frequency Frequent
Updated