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  1. Dictionary
    split second

    noun

    • 1. a very brief moment of time: "for a split second, I hesitated"

    adjective

    • 1. very rapid or accurate: "split-second timing is crucial"

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  2. dictionary.cambridge.org › dictionary › englishSPLIT SECOND | English meaning - Cambridge Dictionary

    noun [ S ] uk / ˌsplɪt ˈsek. ə nd / us / ˌsplɪt ˈsek. ə nd /. Add to word list. a very short moment of time: They brought out guns and for a split second nobody moved. We had to make a split-second (= very quick) decision. Synonyms. flash. heartbeat.

  3. www.merriam-webster.com › dictionary › split-secondSplit-second Definition & Meaning - Merriam-Webster

    Learn the meaning of split-second as an adjective and a noun, with synonyms, examples, and word history. A split-second is a very short period of time or a fraction of a second.

  4. www.collinsdictionary.com › dictionary › englishSPLIT SECOND definition and meaning | Collins English Dictionary

    adjective. 1. made or arrived at in an infinitely short time. Soldiers had to make split-second decisions before opening fire, he said. Police have to make split-second judgments. 2. depending upon minute precision. with split-second precision. Set and maintain your PC's internal clock with split-second accuracy.

  5. www.dictionary.com › browse › split-secondSPLIT SECOND Definition & Meaning - Dictionary.com

    Split second definition: a fraction of a second.. See examples of SPLIT SECOND used in a sentence.

  6. www.thefreedictionary.com › split-secondSplit-second - definition of split-second by The Free Dictionary

    A split second is an extremely small period of time, such as the time it takes the eye to blink or the heart to beat. Learn how to use this phrase in different contexts and languages, and see synonyms and translations.

  7. www.vocabulary.com › dictionary › split secondSplit second - Definition, Meaning & Synonyms - Vocabulary.com

    A moment so short it can barely be measured, like the time it takes to blink, is called a split second. A birdwatcher may catch sight of a hummingbird, only to have it disappear a split second later. You can also call a split second a heartbeat or a flash.

  8. www.thefreedictionary.com › split+secondsplit second - The Free Dictionary

    n. an extremely small period of time; instant. adj ( prenominal) 1. made or arrived at in an infinitely short time: a split-second decision. 2. depending upon minute precision: split-second timing.