NOUN
- a second (as measured by an atomic clock) added to or subtracted from Greenwich Mean Time in order to compensate for slowing in the Earth's rotation
How To Use leap second In A Sentence
- Under an international pact, the preference for leap seconds is December 31 or June 30.
- It is because of this general slowing down of the Earth that leap seconds need to be inserted into some years.
- So now we have International Atomic Time (TAI) with no leap seconds, and Coordinated Universal Time (UTC) which have drifted apart by 33 seconds since 1972. A Great Leap…Forward?
- The last time a leap second was added was in the dying moments of 2005.