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Great Red Spot

noun, Astronomy.

Red Spot

noun, Astronomy.
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
First recorded in 1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for Great Red Spot
Historical Examples
  • The most notable of the latter is one known as the "Great Red Spot."

    Astronomy of To-day Cecil G. Dolmage
  • Determine from either of these numbers the size of the Great Red Spot.

    A Text-Book of Astronomy George C. Comstock
  • The Great Red Spot, about 30,000 miles long and a quarter as much in breadth has been visible for about half a century.

    Astronomy David Todd
  • There are various spots on his surface, and one remarkable feature is a dark mark, which is called the 'Great Red Spot.'

  • A Great Red Spot spread in widening circle over the white mass.

    The Yotsuya Kwaidan or O'Iwa Inari James S. De Benneville
  • The Jupiter, with the Great Red Spot conspicuous in the southern hemisphere, is by Dr. Common.

  • Since last summer a Great Red Spot has been noticed on the surface of the planet, which has attracted much attention.

  • The rotation period deduced from them is nearly the same as from the Great Red Spot.

    A Journey in Other Worlds John Jacob Astor
  • There she stood with a Great Red Spot burning in her cheeks, and a fierce light in her eyes.

    The Yellow House E. Phillips Oppenheim
  • He was being catapulted down the ray to the mysterious point of brilliance in the Great Red Spot.

    Pirates of the Gorm Nat Schachner
British Dictionary definitions for Great Red Spot

Great Red Spot

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

Red Spot

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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