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horizon

ho·ri·zon [ hə rz'n ]


noun  (plural ho·ri·zons)
Definition:
 
1. place where earth meets sky: the line in the farthest distance where the land or sea seems to meet the sky

2. astronomy circle on apparent sphere of sky: a circle formed on the celestial sphere by a plane tangent to a point on the Earth's surface

3. astronomy circle on celestial sphere: a circle formed on the celestial sphere by a plane through the center of the Earth and parallel to the tangent of a point on Earth's surface

4. geography distinct layer of soil: a layer of soil having characteristics that distinguish it from other layers

5. paleontology geology geologic layer: a distinct layer of rock or geologic deposit within a stratum that can be dated, e.g. by its fossil content



plural noun ho·ri·zons 
Definition:
 
range of experience: the range or limits of somebody's interests, knowledge, or experience

[14th century. Via French< late Latin< Greek horizōn (kuklos) "limiting (circle)," present participle of horizein "to limit" < horos "limit"]

ho·ri·zon·al adjective
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