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attosecond

American  
[at-oh-sek-uhnd] / ˈæt oʊˌsɛk ənd /

noun

  • attoseconds
    plural
  1. a unit of time equal to one quintillionth (10-18) of a second. Abbreviation: as.


Other Word Forms

Noun Inflected Forms

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

This nonlinear optical technique is capable of tracking electron motion on attosecond timescales.

From Science Daily Jan. 5, 2026

HHS, on the other hand, reaches into the extreme-ultraviolet range and can resolve events lasting just an attosecond, a billionth of a billionth of a second.

From Science Daily Jan. 5, 2026

This approach enables the generation of attosecond X-ray pulses at terawatt-scale peak power and megahertz repetition rates without reducing the electron bunch charge.

From Science Daily Nov. 25, 2024

The previously shared electrons undergo ultrafast changes during this process, and attosecond pulses made it possible for researchers to follow the real-time breaking of a chemical bond.

From Salon Oct. 10, 2023

As researchers continue to improve their ability to produce attosecond light pulses, they’ll gain a deeper understanding of the basic particles that make up matter.

From Salon Oct. 10, 2023

In CuTe, with its chain-like structure, the transition exceeded 200 attoseconds.

From Science Daily Feb. 9, 2026

In fact, there are approximately as many attoseconds in one second as there are seconds in the age of the universe.

From Salon Oct. 10, 2023

This duration is so short that there are as many attoseconds in a single second as there have been seconds in the entire history of the universe.

From Scientific American Oct. 3, 2023

The Royal Swedish Academy of Sciences said the three laureates' experiments produced "pulses of light so short that they are measured in attoseconds".

From BBC Oct. 3, 2023

But electron movements are extremely hard to capture because they take place within attoseconds: the realm of quintillionths of a second.

From Science Daily Sep. 29, 2023

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