/ Dictionary / Index S semibreve: Meaning and Definition of Find definitions for: sem•i•breve Pronunciation: (sem'ē-brēv", -brev", sem'ī-), [key] — n. Music Chiefly Brit. a note half the length of a breve; whole note. See illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: semibreve (Thesaurus) semibituminous coal semicentenary Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language