intonation (n.)youdaoicibaDictYouDict[intonation 词源字典]
1610s, "opening phrase of a melody," from French intonation, from Medieval Latin intonationem (nominative intonatio), from past participle stem of intonare (see intone). Meaning "modulation of the voice in speaking" is from 1791.[intonation etymology, intonation origin, 英语词源]