zeptosecond

noun
zep·to·sec·ond | \ˈzep-tə-ˌse-kənd, -kənt\

Definition of zeptosecond 

: one sextillionth of a second

First Known Use of zeptosecond

1994, in the meaning defined above

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Dictionary Entries near zeptosecond

Zeppelin

zeppole

zepto-

zeptosecond

zequin

zerda

zeriba

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The first known use of zeptosecond was in 1994

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