- The definition of a zenith is the highest point or peak.
- An example of a zenith is the highest point in the sky.
- A ten-year period in the 1980s when a career was most successful is an example of a zenith.
This man has reached the zenith of this mountain.
- the point directly overhead in the sky or on the celestial sphere
- the highest point; peak
Origin of zenithMiddle English senyth ; from Middle French cenith ; from Medieval Latin cenit ; from senit, scribal error for Arabic samt, road, path (as in samt al-raʾs, zenith, literally , way of the head) ; from Classical Latin semita, path, way
- The point on the celestial sphere that is directly above the observer.
- The upper region of the sky.
- The highest point above the observer's horizon attained by a celestial body.
- The point of culmination; the peak: the zenith of her career. See Synonyms at summit.
Origin of zenithMiddle English senith, from Old French cenith, from Medieval Latin, from Arabic samt (ar-ra’s), path (over the head), from Latin sēmita, path; see mei-1 in Indo-European roots.