split second

noun

: a very short period of time

Full Definition of SPLIT SECOND

: a fractional part of a second : flash

See split second defined for English-language learners

See split second defined for kids

1912

Synonyms: beat, eyeblink, flash, heartbeat, jiff, jiffy, minute, moment, nanosecond, New York minute, second, shake, instant, trice, twinkle, twinkling, wink

Next Word in the Dictionary: split–second watchPrevious Word in the Dictionary: split–secondAll Words Near: split second

What made you want to look up split second? Please tell us where you read or heard it (including the quote, if possible).

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears