sidereal second

noun

: the 60th part of a sidereal minute

Word History

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of sidereal second was in 1849

Rhymes for sidereal second

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Cite this Entry

“Sidereal second.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sidereal%20second. Accessed 13 Mar. 2025.

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