zenith

In the tropics, the sun reaches its absolute zenith twice a year, sitting directly overhead at 90 degrees so vertical objects cast no shadow at noon.

Definition

• the point of the celestial sphere that is directly opposite the nadir and vertically above the observer
• the highest point reached in the heavens by a celestial body

Synonyms

• pinnacle
• peak
• top

Pronunciation

Source

“zenith,” Merriam-Webster.com Dictionary, https://www.merriam-webster.com/dictionary/zenith. Accessed 12/13/2025.