yoctosecond

[ yok-tuh-sek-uh nd ]
/ ˈyɒk təˌsɛk ənd /

noun

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

Nearby words

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019