/ Dictionary / Index C capsize: Meaning and Definition of Find definitions for: cap•size Pronunciation: (kap'sīz, kap-sīz'), [key] — -sized, -siz•ing. to turn bottom up; overturn:They capsized the boat. The boat capsized. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: capsize (Thesaurus) capsid capsizing moment Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language