This is the 8094th most frequent Swedish word.
zenit
The point in the sky directly above an observer.
In this sentence, 'zenit' means the point in the sky directly above the observer where the sun reaches its highest position.
Solens zenit infaller vid lunchtid.
The sun's zenith occurs at midday.
Here, 'zenit' is used metaphorically to describe the peak or highest point of one's career achievement.
Hen känner att hen har nått sin karriärs zenit.
They feel they have reached the zenith of their career.
In this instance, 'zenit' refers to the astronomical point directly overhead an observer on the celestial sphere.