leap second
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.leap second
nounDefinition of LEAP SECOND
: an intercalary second added to Coordinated Universal Time to compensate for the slowing of the earth's rotation and keep Coordinated Universal Time in synchrony with solar time
First Known Use of LEAP SECOND
1971
Rhymes with LEAP SECOND
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