Online Encyclopedia

RETROGRADE (from the Lat. retro, back...

Online Encyclopedia
Originally appearing in Volume V23, Page 203 of the 1911 Encyclopedia Britannica.
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RETROGRADE (from the Lat. retro, backwards, gradiri, to go), in astronomy, the direction of the apparent motion of a planet from E. to W.; the opposite of its regular motion around the sun, and due to the motion of the earth.
End of Article: RETROGRADE (from the Lat. retro, backwards, gradiri, to go)
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