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Great Red Spot

noun, Astronomy
1.

Red Spot

noun, Astronomy
1.
a large, usually reddish gaseous vortex on the surface of Jupiter, about 14,000 by 30,000 km, that drifts about slowly as the planet rotates and has been observed for several hundred years.
Also called Great Red Spot.
Origin of Red Spot
1875-1880
1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for Great Red Spot

Great Red Spot

noun
1.
a large long-lived oval feature, south of Jupiter's equator, that is an anticyclonic disturbance in the atmosphere

Red Spot

noun
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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Great Red Spot in Science
Great Red Spot  
A very large, high-pressure atmospheric feature on the planet Jupiter, characterized by anticyclonic winds circulating at a speed of approximately 400 km (248 mi) per hour. The storm has persisted on Jupiter's surface for more than 300 years since first observed through telescopes; the cause of its reddish color is unknown.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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