an area in which something acts or operates or has power or control: | the range of interest or activity that can be anticipated |
the bony cavity in the skull containing the eyeball | the line at which the sky and Earth appear to meet |
the (usually elliptical) path described by one celestial body in its revolution about another | a specific layer or stratum of soil or subsoil in a vertical cross section of land |
the path of an electron around the nucleus of an atom | the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth |
a particular environment or walk of life | |