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fraction of a second

NOUN
split second
Synonyms
STRONGEST
blink of an eye millisecond nanosecond
WEAK
bat of an eye flash half a second heartbeat instant jiffy microsecond 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.

A smartphone can send data across the world in a fraction of a second.

From MarketWatch • May 4, 2026

It took him a fraction of a second to realize that he was still flying—and alive.

From The Wall Street Journal • Feb. 26, 2026

"People were screaming. It all happened in a fraction of a second."

From BBC • Dec. 21, 2024

Neutron stars -- the ultra-dense remains of a dead star -- typically rotate at mind-bendingly fast speeds, taking just seconds or even a fraction of a second to fully spin on their axis.

From Science Daily • Jun. 5, 2024

It lasted only the fraction of a second and I rejected it immediately; still it had flashed across the dark sky of my mind.

From "Invisible Man" by Ralph Ellison