• synonyms

solar cycle

See more synonyms on Thesaurus.com
noun Astronomy.
  1. the variation of sunspots, prominences, flares, and other solar activity through an 11-year cycle.
Compare sunspot cycle.
Also called solar activity cycle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
  • About
  • Cookies, Terms, & Privacy
© 2018 Dictionary.com, LLC.