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