HyperDic: leap_second

English > 1 sense of the expression leap second:
NOUNtimeleap seconda 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
English > leap second: 1 sense > noun 1, time
MeaningA 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.
Broadersecond, sec, s1/60 of a minute

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