attosecond
noun
a unit of time equal to one quintillionth (10-18) of a second. Abbreviation: as.
attoseconds
-
pluralof attosecond.plural
The grammatical form denoting more than one person, place, thing, or idea.
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.
In CuTe, with its chain-like structure, the transition exceeded 200 attoseconds.
From Science Daily ● Feb. 9, 2026
In three dimensional copper, the transition was extremely fast, taking about 26 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
