solar cycle

solar cycle

noun Astronomy.
the variation of sunspots, prominences, flares, and other solar activity through an 11-year cycle.
Also called solar activity cycle.
Compare sunspot cycle.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Solar cycle is always a great word to know.
So is planet. Does it mean:
a zodiacal constellation between Aries and Aquarius also called the Fishes
any of the nine large heavenly bodies revolving about the sun and shining by reflected light: a similar body revolving about a star other than the sun
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