split second

3 ENTRIES FOUND:

split second

noun

: a very short period of time

Full Definition of SPLIT SECOND

:  a fractional part of a second :  flash

Examples of SPLIT SECOND

  1. In a split second, it was all over.
  2. <a devastating accident can cause everything in your life to change in a split second>

First Known Use of SPLIT SECOND

1912

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