noun
zenith
ZEE-nith/ˈziːnɪθ/
The point in the sky directly overhead.
The gold dot marks the zenith directly above the observer.

Etymology
Arabic samt, 'path,' was shortened from a phrase meaning 'the way over the head.' The resulting name for the point directly overhead became an image for the highest level of achievement or success.
In context
we reach the zenith of the work of Christ, the acme, the high point
More examples
- The telescope points toward the zenith, directly above us.
- A star at the zenith has an altitude of 90 degrees.
- Your zenith changes as you move across Earth's surface.
Forms
zenith · zeniths