The act of intoning or chanting. An intoned utterance. A manner of producing or uttering tones, especially with regard to accuracy of pitch. Linguistics The use of changing pitch to convey syntactic information: a questioning intonation. A use of pitch characteristic of a speaker or dialect: "He could hear authority, the old parish intonation coming back into his voice\u201d ( Graham Greene). Music The opening phrase of a plainsong composition sung as a solo part.