Found this word online definitions from different sources.
More commonly, metacommunication is defined as nonverbal signals that modify the meaning of verbal expressions, for example to convey sincerity or sarcasm, or.....
Metacommunication - Wiley Online Library
John Wiley
Psychologists define metacommunication as the sum of your verbal and non- verbal communication.
Communication Skills: How's Your Metacommunication? - Carol Roth
I first learned about metacommunication in the early 90's. My wife and I, along with another couple we were friends with, took a series of sessions to train us in Reflective Listening, and our teacher, Peg, used the word in it's other use, talking about how we communicate. That is the purpose of Reflective Listening, to fine tune our communication by examining how we communicate. "MetaTalk" is another word for it.
In Reflective Listening, one repeats back in their own words what they've heard to the speaker. The speaker either affirms their correct understanding, or gives a correction. The listener then again says in their own words the speaker's message. This continues until the speaker affirms a correct understanding.
During this process, the listen gives no response, no reply, feedback, nothing except repeating the speaker's message in their own words.
Once a correct understand is established, the listen gives their reply, and is the speaker, and the one who was the speaker is the listener.
"Feelings" words are encouraged where appropriate. "You're just pushing my buttons", compared to, "I'm triggered by this, and have a hard time controlling myself". Self-ownership is also important for effective communication, and good interpersonal relationships.
Much love!