Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun horizon

4 senses of horizon

Sense 1
horizon, apparent horizon, visible horizon, sensible horizon, skyline -- (the line at which the sky and Earth appear to meet)
       => line -- (a spatial location defined by a real or imaginary unidimensional extent)

Sense 2
horizon, view, purview -- (the range of interest or activity that can be anticipated; "It is beyond the horizon of present knowledge")
       => scope, range, reach, orbit, compass, ambit -- (an area in which something acts or operates or has power or control: "the range of a supersonic jet"; "a piano has a greater range than the human voice"; "the ambit of municipal legislation"; "within the compass of this article"; "within the scope of an investigation"; "outside the reach of the law"; "in the political orbit of a world power")

Sense 3
horizon -- (a specific layer or stratum of soil or subsoil in a vertical cross section of land)
       => stratum -- (one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock))

Sense 4
horizon, celestial horizon -- (the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth)
       => great circle -- (a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center)