celestial horizon

noun Astronomy.

See under horizon (def. 2b).

Origin of celestial horizon

First recorded in 1895–1900

Words nearby celestial horizon

Celestial Empire, celestial equator, celestial globe, celestial guidance, celestial hierarchy, celestial horizon, celestial latitude, celestial longitude, celestial marriage, celestial mechanics, celestial meridian

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for celestial horizon

celestial horizon

noun

See horizon (def. 2b)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for celestial horizon

celestial horizon

A great circle on the celestial sphere having a plane that passes through the center of the Earth at a right angle to the line formed by an observer's zenith and nadir. The celestial horizon divides the celestial sphere into two equal hemispheres based on the observer's location, with one hemisphere representing the half of the sky visible to the observer at that location and the other representing the half that is hidden from the observer below the Earth's horizon. The celestial horizon is used as the reference point in determining a celestial body's altitude. Also called rational horizon Compare sensible horizon.

单词	celestial horizon
释义	celestial horizon noun Astronomy. See under horizon (def. 2b). Origin of celestial horizon First recorded in 1895–1900 Words nearby celestial horizon Celestial Empire, celestial equator, celestial globe, celestial guidance, celestial hierarchy, celestial horizon, celestial latitude, celestial longitude, celestial marriage, celestial mechanics, celestial meridian Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for celestial horizon celestial horizon noun See horizon (def. 2b) Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for celestial horizon celestial horizon A great circle on the celestial sphere having a plane that passes through the center of the Earth at a right angle to the line formed by an observer's zenith and nadir. The celestial horizon divides the celestial sphere into two equal hemispheres based on the observer's location, with one hemisphere representing the half of the sky visible to the observer at that location and the other representing the half that is hidden from the observer below the Earth's horizon. The celestial horizon is used as the reference point in determining a celestial body's altitude. Also called rational horizon Compare sensible horizon. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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