split second

/S P L IH1 T S EH1 K AH0 N D/
noun
  1. 1

    The nick of time; a brief moment.

    โ€œLuckily, no other cars were nearby, and the fire engine's driver was able to swerve into another lane a split second before striking the SUV, Baker said. http//www.tulsaworld.com/NewsStory.asp?ID=070123_Ne_A9_SUVpl59893#โ€

Source: https://en.wiktionary.org/wiki/split%20second, https://en.wiktionary.org/wiki/split-second