The line at which the earth's surface and the sky appear to meet
the sun rose above the horizon
The circular boundary of the part of the earth's surface visible from a particular point, ignoring irregularities and obstructions
A great circle of the celestial sphere, the plane of which passes through the center of the earth and is parallel to that of the apparent horizon of a place
The limit of a person's mental perception, experience, or interest
she wanted to leave home and broaden her horizons
A layer of soil or rock, or a set of strata, with particular characteristics
A level of an excavated site representing a particular period
the line at which the sky and Earth appear to meet
the range of interest or activity that can be anticipated; "It is beyond the horizon of present knowledge"
a specific layer or stratum of soil or subsoil in a vertical cross section of land
the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
the top layer of a soil profile; usually contains humus
The horizon is the apparent line that separates earth from sky, the line that divides all visible directions into two categories: those that intersect the Earth's surface, and those that do not. At many locations, the true horizon is obscured by trees, buildings, mountains, etc. ...
Horizon is a fantasy novel by Lois McMaster Bujold. It is the fourth in the tetralogy The Sharing Knife.
An archaeological horizon is a widely disseminated period of common art and artifacts at an archaeological site or, more usually, over a larger geographic area, and is a distinctive level in that site's or area's archaeological sequence.
Horizon is a current and long-running BBC popular science and philosophy documentary programme.
The Horizon is a mechanical swing-lens panoramic camera. It is manufactured by Krasnogorskiy Zavod in Krasnogorsk, Russia, better-known for their range of Zenit cameras.
Horizon was a Canadian current affairs television series which aired on CBC Television from 1963 to 1964.
The horizontal line that appears to separate the Earth from the sky; The range or limit of one's knowledge, experience or interest; A specific layer of soil or strata; A cultural sub-period or level within a more encompassing time period
(horizons) Layers of soil distinguished by their color, texture, and permeability. 
((soil) horizons) Soil is made up of distinct horizontal layers; these layers are called horizons. They range from rich, organic upper layers (humus and topsoil) to underlying rocky layers ( subsoil, regolith and bedrock).
(Horizons) 30 years later, would you trade in your iPod for a Walkman?
(Horizons) We do most of our work early in the morning, or just before sunset,...it has the best lighting.
(Horizons) is a design folio that trains students adept in the visual arts. It presents representations and images that are sometimes serious, sometimes light-hearted, but always thought provoking.
Where the water and sky or ground and sky appear to intersect.
Brand of advanced lead-acid batteries made by ElectroSource. (also apparently the name of a stationary power supply system made by Exide.) The plates in a Horizon battery are arranged horizontally, instead of the more common vertical arrangement, hence the name. ...
The visible juncture of Earth and the sky, represented in a horoscope by the Ascendant-Descendant axis.
One of several lines or planes used as reference for observation and measurement relative to a given location on the surface of the earth. The geographic horizon, also called the apparent horizon, is the distant line along which earth and sky appear to meet. ...
Single layer in soil profile with similar properties or material but which differs at least in one property, e.g. colour or texture from adjacent horizons above or below in the profile; diagnostic horizon: Dominant soil property or material defines name of horizon, e.g. ...
The number of plies played in each trial of a truncated rollout. A rollout that is truncated after 10 plies has a 10-ply horizon.
A distinct layer of soil encountered in vertical section.
the edge of the visible Universe, but not the edge of the Universe since the Universe has no edge.