Red Spot

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:
1875–80

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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