/ Dictionary / Index S summer solstice: Meaning and Definition of Find definitions for: sum'mer sol'stice Pronunciation: [key] — Astron. Astron. the solstice on or about June 21st that marks the beginning of summer in the Northern Hemisphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. summer snowflake summer squash Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language