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yoctosecond

American  
[yok-tuh-sek-uhnd] / ˈjɒk təˌsɛk ənd /

noun

  1. one septillionth (10-24 ) of a second. ysec, ys


Example Sentences

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It was so impossibly long ago, and yet a mere yoctosecond in the slippery fabric of American time.

From Los Angeles Times ● Jul. 5, 2020

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