English

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Etymology

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1971;[1] derived from the terminology for leap day/leap year.

Noun

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leap second (plural leap seconds)

  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.
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Translations

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References

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  1. ^ leap second”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present. "First Known Use of leap second 1971, in the meaning defined above"

Further reading

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Anagrams

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