zeptosecond

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See also: zepto-second

English[edit]

Etymology[edit]

zepto- +‎ second

Noun[edit]

zeptosecond (plural zeptoseconds)

(metrology) An SI unit of time equal to 10⁻²¹ seconds. Symbol: zs

Translations[edit]

10⁻²¹ second

Finnish: zeptosekunti

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