Definition of 'horizon'
- the line at which the sky and Earth appear to meet
Synonyms: apparent horizon visible horizon sensible horizon skyline
- the range of interest or activity that can be anticipated; "It is beyond the horizon of present knowledge"
Synonyms: view purview
- a specific layer or stratum of soil or subsoil in a vertical cross section of land
- the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
Synonyms: celestial horizon