horizon

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ho·ri·zon

 (hə-rī′zən)
n.
1. The apparent intersection of the earth and sky as seen by an observer. Also called apparent horizon.
2. Astronomy
c. The limit or edge of the observable universe.
3. The range of one's knowledge, experience, or interest.
4. Geology
a. A specific position in a column of rock layers, usually designated by the occurrence of one or more distinctive fossils or by a distinctive sediment bed, that is used in stratigraphy.
b. A layer of soil that can be distinguished from adjacent layers of soil and that is characterized by a certain color, texture, structure or chemical composition.
5. Archaeology A period during which the influence of a specified culture spread rapidly over a defined area: artifacts associated with the Olmec horizon in Mesoamerica.

[Middle English orizon, from Old French, from Latin horizōn, from Greek horizōn (kuklos), limiting (circle), horizon, present participle of horizein, to limit, from horos, boundary.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

horizon

(həˈraɪzən)
n
1. (Physical Geography) Also called: visible horizon or apparent horizon the apparent line that divides the earth and the sky
2. (Astronomy) astronomy
a. Also called: sensible horizon the circular intersection with the celestial sphere of the plane tangential to the earth at the position of the observer
b. 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
3. the range or limit of scope, interest, knowledge, etc
4. (Geological Science) a thin layer of rock within a stratum that has a distinct composition, esp of fossils, by which the stratum may be dated
5. (Physical Geography) a layer in a soil profile having particular characteristics. See A horizon, B horizon, C horizon
6. on the horizon likely or about to happen or appear
[C14: from Latin, from Greek horizōn kuklos limiting circle, from horizein to limit, from horos limit]
hoˈrizonless adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ho•ri•zon

(həˈraɪ zən)

n.
1. the line or circle that forms the apparent boundary between earth and sky.
2.
a. 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).
b. 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).
3. the limit or range of perception, knowledge, or the like.
4. Usu., horizons. the scope of a person's interest, education, understanding, etc.
5. a thin, distinctive geological stratum useful for stratigraphic correlation.
6. any of the series of distinctive layers found in a vertical cross section of any well-developed soil.
[1540–50; < Latin horizōn < Greek horízōn(kýklos) bounding (circle), present participle of horízein to bound, limit]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

ho·ri·zon

(hə-rī′zən)
The circle on the celestial sphere along which the Earth and the sky appear to meet.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

horizon

In general, the apparent or visible junction of the Earth and sky, as seen from any specific position. Also called the apparent, visible, or local horizon. A horizontal plane passing through a point of vision or perspective center. The apparent or visible horizon approximates the true horizon only when the point of vision is very close to sea level.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.horizon - the line at which the sky and Earth appear to meethorizon - the line at which the sky and Earth appear to meet
linear perspective, perspective - the appearance of things relative to one another as determined by their distance from the viewer
line - a spatial location defined by a real or imaginary unidimensional extent
2.horizon - the range of interest or activity that can be anticipated; "It is beyond the horizon of present knowledge"
ambit, range, scope, reach, compass, orbit - an area in which something acts or operates or has power or control: "the range of a supersonic jet"; "a piano has a greater range than the human voice"; "the ambit of municipal legislation"; "within the compass of this article"; "within the scope of an investigation"; "outside the reach of the law"; "in the political orbit of a world power"
3.horizon - a specific layer or stratum of soil or subsoil in a vertical cross section of land
profile - a vertical section of the Earth's crust showing the different horizons or layers
stratum - one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)
soil horizon - a layer in a soil profile
geological horizon - a layer of rock with a particular composition (especially of fossils); for dating the stratum
4.horizon - the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
great circle - a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

horizon

noun
1. skyline, view, vista, field or range of vision The sun had already sunk below the horizon.
2. scope, perspective, range, prospect, stretch, ken, sphere, realm, compass, ambit, purview By embracing other cultures, we actually broaden our horizons.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

horizon

noun
The extent of one's perception, understanding, knowledge, or vision:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
obzor
horisont
horisontti
horizont
horizont
sjóndeildarhringur
地平線
수평선
horizontaliaihorizontalushorizontas
horizonts
horizonhorizont
obzor
obzorje
horisont
ขอบฟ้า
chân trời

horizon

[həˈraɪzn] Nhorizonte m (fig) → horizonte m, perspectiva f
a boat on the horizonuna barca en el horizonte
there are new schemes on the horizonhay nuevos planes en perspectiva
that's over the horizon noweso queda ya a la espalda
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

horizon

[həˈraɪzən]
n
(where land and sky meet)horizon m
the smoke on the horizon → la fumée à l'horizon
(fig) to be on the horizon (= imminent) → être à l'horizon horizons
npl (= possibilities) → horizons mpl
to open up new horizons → ouvrir des horizons nouveaux
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

horizon

nHorizont m; (fig also)Gesichtskreis m no pl; new horizonsneue Horizonte; a limited horizonein enger or begrenzter Horizont; on the horizonam Horizont; (fig)in Sicht; the ship went over the horizondas Schiff verschwand am Horizont; the sun was below the horizondie Sonne war hinter dem Horizont
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

horizon

[həˈraɪzn] n (also) (fig) → orizzonte m
on the horizon → all'orizzonte
to widen one's horizons → allargare i propri orizzonti
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

horizon

(həˈraizn) noun
the line at which the earth and the sky seem to meet. The sun went down below the horizon; A ship could be seen on the horizon.
horizontal (horiˈzontl) adjective
at right angles to vertical; parallel to the horizon; lying level or flat. a horizontal line; a horizontal surface.
ˌhoriˈzontally adverb
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.

horizon

أُفُق obzor horisont Horizont ορίζοντας horizonte horisontti horizon horizont orizzonte 地平線 수평선 horizon horisont horyzont horizonte горизонт horisont ขอบฟ้า ufuk chân trời 地平线
Multilingual Translator © HarperCollins Publishers 2009
References in periodicals archive ?
Apparent Horizon. Physically, apparent horizons constitute the observable boundary which is the largest boundary of Universe in an instant.
In [1,5], Akbar and Cai reversed the formulation by rewriting the Friedmann equations into the heat balance equation and the unified first law of thermodynamics at the cosmical apparent horizon, for General Relativity (GR), Gauss-Bonnet, and Lovelock gravity.
This "information paradox" recently led to the suggestion that black holes only possess apparent horizons [12] as opposed to genuine event horizons: features traditionally regarded as the defining hallmarks of true black holes [13].

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