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.

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Other Word Forms

Noun Inflected Forms

• attoseconds
  plural

Example Sentences

See Examples For:

attosecond attoseconds

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

From Science Daily ● Jan. 5, 2026

"With these unique X-rays, we can perform truly damage-free measurements of structural and electronic properties. This paves the way for advanced studies like attosecond crystallography, allowing us to observe electronic dynamics in real space."

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

So what kind of research questions can attosecond pulses help answer?

From Salon ● Oct. 10, 2023

In three dimensional copper, the transition was extremely fast, taking about 26 attoseconds.

From Science Daily ● Feb. 9, 2026

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

At the atomic level, the motions of electrons and nuclei typically take place over the course of attoseconds.

From Scientific American ● Oct. 3, 2023

The feat surpasses the prior record of 80 attoseconds, set in 2008.

From BBC ● Sep. 6, 2012