(Music)a series of eight notes occupying the interval between (and including) two notes, one having twice or half the frequency of vibration of the other (乐)八度音阶 ■the interval between these two notes 八度程 ■each of the two notes at the extremes of this interval (八度音程中的)首音;尾音 ■these two notes sounding together 八度和音
a group or stanza of eight lines; an octet 八行诗节;八重奏;八重唱
the seventh day after a Church festival 教会节日后的第七天 ■a period of eight days beginning with the day of such a festival (从教会节日算起的)八天周期
(Fencing)the last of eight parrying positions (剑)(击剑防守姿势的)第八式
(Brit.)a wine cask holding an eighth of a pipe (英)(容量为八分之一大酒桶的)酒桶
常用词组 law of octaves
(Chemistry, historical) (化 史)。 见 Newlands
语源
Middle English (in sense 3): via Old French from Latin octava dies 'eighth day'