HORIZON

• (noun) the range of interest or activity that can be anticipated

  "It is beyond the horizon of present knowledge"

  synonyms : purview , view

• (noun) the line at which the sky and Earth appear to meet

  synonyms : apparent horizon , sensible horizon , skyline , visible horizon

• (noun) the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth

  synonyms : celestial horizon

• (noun) a specific layer or stratum of soil or subsoil in a vertical cross section of land

WordNet® 3.0, © 2006 by Princeton University.

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