| 释义 |
leap second
leap secondn. A second of time, as measured by an atomic clock, added to or omitted from official timekeeping systems periodically to compensate for small changes in the rotation of the earth and therefore the length of a solar day.leap second n (Units) a second added to or removed from a scale for reckoning time on one particular occasion, to synchronize it with another scale leap′ sec`ond
n. an extra second intercalated into the world's timekeeping system about once a year, made necessary by the gradual slowing down of the earth's rotation. [1970–75] Thesaurus| Noun | 1. | leap second - 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 rotations, sec, second - 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites |
leap second
leap second See universal time.leap secondCoordinated Universal TimeAcronymsSeelong shotleap second
Related to leap second: leap yearWords related to leap secondnoun 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 rotationRelated Words |