vertical circle


: a great circle of the celestial sphere whose plane is perpendicular to that of the horizon see azimuth illustration

Word History

First Known Use

1559, in the meaning defined above

Time Traveler
The first known use of vertical circle was in 1559

Dictionary Entries Near vertical circle

Cite this Entry

“Vertical circle.” Dictionary, Merriam-Webster, Accessed 22 May. 2024.

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