Word.ws English Dictionary

attosecond

attosecond noun: an SI unit of time equal to 10⁻¹⁸ seconds. Symbol: as.

Noun

attosecond (plural attoseconds)

  1. An SI unit of time equal to 10⁻¹⁸ seconds. Symbol: as
    • Holonyms: femtosecond < picosecond < nanosecond < microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond < hour < day < week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond <...
    • Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond

Examples of attosecond in a sentence

  • I can think at the speed of light, I can perceive events that last for less than an attosecond, I can run faster than time.2011, Barry Allen, Superman 709:
  • The observation and manipulation of electron dynamics in matter call for attosecond light pulses, routinely available from high-order harmonic generation driven by few-femtosecond lasers.2017, D. E. Rivas, A. Borot, D. E. Cardenas, G. Marcus, X. Gu, D. Herrmann, J. Xu, J. Tan, D. Kormin, G. Ma, W. Dallari, G. D. Tsakiris, I....
  • And an attosecond is an eternity compared with the lifetime of the elusive Higgs boson, a subatomic particle that exists for one-thousandth of an attosecond before decaying.2023 October 9, Dennis Overbye, “The Science Nobel Winners Were Short and Fast”, in The New York Times, archived from the original on 12...

Forms of attosecond

pluralattoseconds

Origin of attosecond

From atto- + second.

Questions about attosecond

What does attosecond mean?
Attosecond means an SI unit of time equal to 10⁻¹⁸ seconds. Symbol: as.
How do you use attosecond in a sentence?
I can think at the speed of light, I can perceive events that last for less than an attosecond, I can run faster than time.
What part of speech is attosecond?
Attosecond is a noun.
What is the plural of attosecond?
The plural of attosecond is attoseconds.

Words near attosecond in the dictionary

  1. attorning
  2. attornment
  3. attornments
  4. attorns
  5. attorny
  6. attosecond
  7. attoseconds
  8. Attouda
  9. Attoun
  10. Attouns
  11. attourneie

Source and license

Adapted from Wiktionary: attosecond (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “attosecond.” Word.ws, https://word.ws/attosecond. Based on Wiktionary, CC BY-SA 4.0.