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horizon | a specific layer or stratum of soil or subsoil in a vertical cross section of land | ||
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horizon, view, purview | the range of interest or activity that can be anticipated | ||
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horizon, apparent horizon, visible horizon, sensible horizon, skyline | the line at which the sky and Earth appear to meet | ||
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horizon, celestial horizon | the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth |