zenith.

1. The direction or point vertically above an observer, opposite the nadir.

2. The greatest point of success, influence, or development.

Use it for

Words that belong together

• at the zenith
• zenith angle

On the page

The beacon stood almost at the zenith from the crater floor.

She adjusted the dish to a point just east of the zenith.

Usage notes

Primary category: sci-fi. Forms: Singular zenith; plural zeniths. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.