split-sec·ond
ˈsplit-ˈse-kənd 
1
: occurring in a split second
a split-second decision
2
: extremely precise
split-second timing
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
Kurt Knutsson, FOXNews.com, 7 May 2026
Replays showed Soler was tagged out about a split-second before Schanuel touched home plate for the third out, but home plate umpire John Tumpane pointed at home, signaling the run.
—Abbey Mastracco, New York Daily News, 3 May 2026
New Atlas, 3 May 2026
The plane burst into a fireball within a split second.
—James Glanz, New York Times, 1 May 2026
See All Example Sentences for split-second
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Adjective
But that split-second scan comes with tradeoffs worth knowing about.
—Kurt Knutsson, FOXNews.com, 7 May 2026
Replays showed Soler was tagged out about a split-second before Schanuel touched home plate for the third out, but home plate umpire John Tumpane pointed at home, signaling the run.
—Abbey Mastracco, New York Daily News, 3 May 2026
Noun
As the human's shot saw the ball graze the top of the net and change trajectory, Ace readjusted in a split second, reacting in real time better than most humans could.
—New Atlas, 3 May 2026
The plane burst into a fireball within a split second.
—James Glanz, New York Times, 1 May 2026
See All Example Sentences for split-second
Cite this Entry
“Split-second.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/split-second. Accessed 15 May. 2026.
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