/ Dictionary / Index S sunspot: Meaning and Definition of Find definitions for: sun•spot Pronunciation: (sun'spot"), [key] — n. one of the relatively dark patches that appear periodically on the surface of the sun and affect terrestrial magnetism and certain other terrestrial phenomena. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sunspot (Thesaurus) sun spider sunspot cycle Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language