Wiktionary
n. The branch of linguistics that studies language and its relationship to culture and society.
Wikipedia
Metalinguistics is the branch of linguistics that studies language and its relationship to other cultural behaviors. It is the study of dialogue relationships between units of speech communication as manifestations and enactments of co-existence. Jacob L. Mey in his book, Trends in Linguistics, describes Mikhail Bakhtin's interpretation of metalinguistics as "encompassing the life history of a speech community, with an orientation toward a study of large events in the speech life of people and embody changes in various cultures and ages."
Usage examples of "metalinguistics".
Besides having suitable genes, he had been through the Intelligence Corps' unmercifully rigorous courses in linguistics and metalinguistics, semantics and metasemantics, every known trick of concentration and memorization.