metalanguage Syllabification: (met·a·lan·guage)Pronunciation: /ˈmetəˌlaNG(g)wij/Definition of metalanguage noun a form of language or set of terms used for the description or analysis of another language. Compare with object language (sense 1). Logic a system of propositions about propositions. metalanguage in other Oxford dictionaries Definition of metalanguage in the British & World English dictionary