the apparent junction of earth and sky
the plane that is parallel to and passes through the earth's surface at an observer's position
the circle formed by the intersection of this plane with the celestial sphere (imaginary sphere surrounding the earth)
the plane parallel to the plane of the apparent horizon but passing through the earth's centre
the circle formed by the intersection of this plane with the celestial sphere
(also in pl) one's range of perception, experience, or knowledge
It's time you widened your horizons
a planar surface between two beds of rock; a time plane of no thickness
a geological oran archaeological layer of a particular time, usu identified by distinctive fossils or artefacts
any of the reasonably distinct soil or subsoil layers in a vertical section of land
said of an event: due shortly