leap second

Etymology
1971; derived from the terminology for leap day/leap year.

Noun

 * 1) A second of time added to the year occasionally to compensate for variation in the rate of Earth's rotation relative to the absolute standards of time.

Translations

 * Chinese:
 * Mandarin:
 * Finnish: karkaussekunti
 * German:
 * Hungarian: szökőmásodperc
 * Italian: secondo intercalare
 * Russian: корректировочная секу́нда, секу́нда координации, високосная секу́нда
 * Spanish: segundo intercalar
 * Swedish: