Intonation:
* In phonetics and linguistics: The rise and fall of the voice in speaking, which can convey different meanings, emotions, and grammatical structures. For example, a question usually ends with a rising intonation, while a statement ends with a falling intonation.
* In music: The pitch of a note or chord, which can create a sense of melody or harmony.
If you encountered "intronition" in a specific context, it might be helpful to provide more details so I can understand what was meant.