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[ap-uh-jee] /ˈæp əˌdʒi/
Astronomy. the point in the orbit of a heavenly body, especially the moon, or of a man-made satellite at which it is farthest from the earth.
Compare perigee.
the highest or most distant point; climax.
Origin of apogee
1585-95; alteration (after French apogée) of earlier apogaeum < Latin < Greek apógaion (diástema) off-earth (distance), neuter of apógaios (adj.), equivalent to apo- apo- + gáïos of the earth, derivative of gaîa, variant of the earth
Related forms
apogeal, apogean, apogeic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for apogee


the point in its orbit around the earth when the moon or an artificial satellite is at its greatest distance from the earth Compare perigee
the highest point
Derived Forms
apogean, adjective
Word Origin
C17: from New Latin apogaeum (influenced by French apogée), from Greek apogaion, from apogaios away from the earth, from apo- + gaia earth
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
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Word Origin and History for apogee

"point at which the moon is farthest from the earth," 1590s, from French apogée, from Latin apogaeum, from Greek apogaion, neuter adjective, "away from the earth," a term from Ptolemaic astronomy, from apo "off, away" (see apo-) + gaia/ge "earth" (see Gaia). Adjective forms are apogeal, apogean.

Online Etymology Dictionary, © 2010 Douglas Harper
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apogee in Science
  1. The point farthest from Earth's center in the orbit of the Moon or an artificial satellite.

  2. The point in an orbit that is most distant from the body being orbited. Compare aphelion, perigee.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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apogee in Culture
apogee [(ap-uh-jee)]

In astronomy, the point during the orbit of a satellite, such as the moon, at which it is farthest from the body being orbited. For planets in the solar system orbiting the sun, their farthest point from the sun is referred to as aphelion.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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