apotome

英[ә'pɔtәmi]

腹板前部(缨尾目铗尾科), 腹板背部

n. The difference between two quantities commensurable only\n in power, as between �2 and 1, or between the diagonal and side of a\n square.\nn. The remaining part of a whole tone after a smaller\n semitone has been deducted from it; a major semitone.