zenith
definition
the highest point reached by a celestial or other object
example
The stars reached their zenith in the clear night sky, creating a breathtaking view for all to see.
synonyms
peaksummitpinnacle
word origin — The word 'zenith' comes from the Arabic word 'samt,' meaning 'direction' or 'path,' which passed into Old Spanish as 'cenit.' It was then adopted into Middle English.