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Semibreve \Sem"i*breve`\, n. [Pref. semi- + breve: cf. F. semi-breve, It. semibreve.] [Formerly written {semibref}.] (Mus.) A note of half the time or duration of the breve; -- now usually called a whole note. It is the longest note in general use.
semibreve n : a musical note having the longest time value (equal to four beats in common time) [syn: {whole note}]