Imaginary point directly above a particular location, on the imaginary celestial sphere
For other uses, see Zenith (disambiguation)."Zenith angle" redirects here. For the novel, see The Zenith Angle.
Diagram showing the relationship between the zenith, the nadir, and different types of horizon
The zenith (UK: /ˈzɛnɪθ/, US: /ˈziːnɪθ/)[1] is an imaginary point directly "above" a particular location, on the celestial sphere. "Above" means in the vertical direction (plumb line) opposite to the gravity direction at that location (nadir). The zenith is the "highest" point on the celestial sphere.
^Jones, Daniel (2011). Roach, Peter; Setter, Jane; Esling, John (eds.). Cambridge English Pronouncing Dictionary (18th ed.). Cambridge University Press. ISBN 978-0-521-15255-6.
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