attosecond
noun
at·to·sec·ond
ˈa-(ˌ)tō-ˌse-kənd 
-kənt
: one quintillionth (10−18) of a second
An attosecond is to a second what a second is to the age of the universe.—
IEEE Spectrum
IEEE SpectrumExamples of attosecond in a Sentence
Recent Examples on the Web
An attosecond is a billionth of a billionth of a second.
—IEEE Spectrum, 28 May 2024
Electrons move and their energies shift at the miniscule timescale of attoseconds.
—Will Sullivan, Smithsonian Magazine, 4 Oct. 2023
At the atomic level, the motions of electrons and nuclei typically take place over the course of attoseconds.
—Daniel Garisto, Scientific American, 3 Oct. 2023
At the heart of this technique is attosecond x-ray absorption spectroscopy, which allowed the ICFO research team to study how electrons behave on timescales as short as a billionth of a billionth of a second (an attosecond) when exposed to powerful infrared radiation.
—IEEE Spectrum, 9 Jan. 2024
See all Example Sentences for attosecond 
IEEE Spectrum, 28 May 2024
Electrons move and their energies shift at the miniscule timescale of attoseconds.
—Will Sullivan, Smithsonian Magazine, 4 Oct. 2023
At the atomic level, the motions of electrons and nuclei typically take place over the course of attoseconds.
—Daniel Garisto, Scientific American, 3 Oct. 2023
At the heart of this technique is attosecond x-ray absorption spectroscopy, which allowed the ICFO research team to study how electrons behave on timescales as short as a billionth of a billionth of a second (an attosecond) when exposed to powerful infrared radiation.
—IEEE Spectrum, 9 Jan. 2024
See all Example Sentences for attosecond
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'attosecond.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near attosecond
Cite this Entry
“Attosecond.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/attosecond. Accessed 27 Jul. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share