split-second

1 of 2

adjective

split-sec·​ond ˈsplit-ˈse-kənd How to pronounce split-second (audio)
1
: occurring in a split second
a split-second decision
2
: extremely precise
split-second timing

split second

2 of 2

noun

: a fractional part of a second : flash

Examples of split-second in a Sentence

Adjective a day trader who is used to making split-second decisions Noun In a split second, it was all over. a devastating accident can cause everything in your life to change in a split second
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Key Benefits of Edge Computing Reduced Latency: Faster data processing is critical for applications such as autonomous vehicles, where split-second decisions are required. Madhu Gaganam, Forbes, 13 Mar. 2025 Waukegan’s Carter Newsome had only a split-second to react. Steve Reaven, Chicago Tribune, 6 Mar. 2025
Noun
Huskies guard Hassan Diarra shoved Neal in the chest and appeared to square up with his fists for a split second as the two were face-to-face. Ryan Morik, Fox News, 15 Mar. 2025 Autofocus responds immediately and moves from near to distant subjects in a split second. PCMAG, 12 Mar. 2025 See All Example Sentences for split-second

Word History

First Known Use

Adjective

1944, in the meaning defined at sense 1

Noun

1912, in the meaning defined above

Time Traveler
The first known use of split-second was in 1912

Browse Nearby Words

See all Nearby Words

Cite this Entry

“Split-second.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/split-second. Accessed 25 Mar. 2025.

Kids Definition

split second

1 of 2 noun
: a small fraction of a second : flash

split-second

2 of 2 adjective
1
: occurring in a split second
a split-second decision
2
: extremely precise
split-second timing
Last Updated: - Updated example sentences
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