Learn how to say Intonation correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word intonation:
1the rise and fall of the voice in speaking:
she spoke English with a German intonation
the action of intoning or reciting in a singing voice.
2accuracy of pitch in playing or singing, or on a stringed instrument such as a guitar:
poor woodwind intonation at the opening
3the opening phrase of a plainsong melody.
early 17th century (in intonation (sense 3)): from medieval Latin intonatio(n-), from intonare (see intone)