- the small circle of the celestial sphere whose plane is tangent to the earth at the position of a given observer, or the plane of such a circle (sensible horizon).
- Also called rational horizon. the great circle of the celestial sphere whose plane passes through the center of the earth and is parallel to the sensible horizon of a given position, or the plane of such a circle (celestial horizon).
Origin of horizon
Examples from the Web for horizon
But without any peace talks on the horizon, everyone is now left to their own devices.In the Middle East, the Two-State Solution Is Dead|Dean Obeidallah|January 2, 2015|DAILY BEAST
They can hear the sound of his boat's motor, growing louder as it comes over the horizon.Alfred Hitchcock’s Fade to Black: The Great Director’s Final Days|David Freeman|December 13, 2014|DAILY BEAST
Ebah, speaking from his home in the camp, said suggestively, “There are signs of a big thing on the horizon.”Intifada 3.0: Growing Unrest and a Plot to Kill an Israeli Minister|Creede Newton|November 21, 2014|DAILY BEAST
But with the 2016 presidential season on the horizon, the Texas firebrand has subtly changed his tune over the last six months.
As F-16s roared from one end of the horizon to the other, they dipped to bomb a grassland strip.Shocked by Ukraine Violence, NATO Prepares to Face Down Putin|Leo Cendrowicz|October 12, 2014|DAILY BEAST
When Mossamedes lifted, two masts and the top of a funnel cut the horizon.Kit Musgrave's Luck|Harold Bindloss
Morey had been scanning the horizon with a pair of powerful binoculars.Islands of Space|John W Campbell
There are also many constellations in the southern hemisphere which never appear above our horizon.
It was midday, then, on the tropic seas, and the horizon was closing in with clouds as of blood and vapours of stifling heat.The Manxman|Hall Caine
The hills that surround Florence were the boundary of their horizon.The Red Lily, Complete|Anatole France
British Dictionary definitions for horizon
- Also called: sensible horizon the circular intersection with the celestial sphere of the plane tangential to the earth at the position of the observer
- Also called: celestial horizon the great circle on the celestial sphere, the plane of which passes through the centre of the earth and is parallel to the sensible horizon
Word Origin for horizon
Word Origin and History for horizon
late 14c., orisoun, from Old French orizon (14c., Modern French horizon), earlier orizonte (13c.), from Latin horizontem (nominative horizon), from Greek horizon kyklos "bounding circle," from horizein "bound, limit, divide, separate," from horos "boundary." The h- was restored 17c. in imitation of Latin.
Science definitions for horizon
- The apparent intersection of the Earth and sky as seen by an observer. Also called apparent horizon
- See celestial horizon.
- See sensible horizon.
- A specific position in a stratigraphic column, such as the location of one or more fossils, that serves to identify the stratum with a particular period.
- A specific layer of soil or subsoil in a vertical cross-section of land.
Idioms and Phrases with horizon
see on the horizon.