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Agency Dictionary

asynchronous

adjectivePronunciation: /eɪˈsɪŋ.krə.nəs/

In Portuguese: assíncrono

What does “asynchronous” mean?

Not occurring at the same time or coordinated simultaneously, describing workflows or interactions handled independently across time.

Etymology

Formed in English from the Greek prefix a- ("not") and synchronous, which comes from Late Latin synchronus, from Greek synkhronos, "happening at the same time", made of syn ("together") and khronos ("time"). The adjective dates from the 18th century. Its technical use in telecommunications and computing, for signals and operations that do not depend on a shared clock, and its use for work and teaching that do not happen in real time, belong to the 20th and 21st centuries.

Usage note

Often shortened to async in informal and technical writing, as in "async communication".

Synonyms

  • non-simultaneous
  • staggered
  • out of sync
  • non-concurrent

Often confused with

anachronistic
Anachronistic means out of its proper historical time; asynchronous means not happening at the same moment as something else.

Word family

  • asynchrony
  • asynchronously
  • synchronous
  • synchronize
  • synchrony

Usage examples

  • Carol and I worked in Flavors of Americas in asynchronous moments, but we ended up meeting each other sometime later in the path of our careers.

Concept

Source editions

Where this entry comes from in the Agency editorial.

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Cite this entry

“asynchronous”. Agency Wiki, Agency Brasil. Published on November 11, 2026. https://www.agencybrasil.com/en/wiki/dictionary/asynchronous