leap second   (TTS Sound)

The leap_second has 1 Senses.

• leap second
• 閏秒
• 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
• 地球の自転の遅延を補うため、グリニッジ標準時に加えたり引いたりする秒（原子時計で計る）