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Definitions

microsecond

[mahy-kruh-sek-uhnd] / ˈmaɪ krəˌsɛk ənd /
NOUN
split second
Synonyms
STRONGEST
blink of an eye millisecond nanosecond
WEAK
bat of an eye flash fraction of a second half a second heartbeat instant jiffy moment nothing flat twinkling

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For example, 5G communication systems require timing accuracy within a tenth of a microsecond.

From Science Daily • Dec. 30, 2025

Then, he recalled, "they would play the points" in endless takes -- with or without the ball -- repeating choreography timed "down to the microsecond".

From Barron's • Dec. 23, 2025

They’re executing millions of trades on microsecond timescales using signals derived from petabytes of data.

From MarketWatch • Nov. 15, 2025

"If your mind drifts for even 30 seconds, even a microsecond, it can be dangerous for everyone on the train."

From BBC • Oct. 3, 2025

But it’s a faltering microsecond that is a lifetime for me.

From "The Adoration of Jenna Fox" by Mary E. Pearson

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.