pre-language
/priːˈlaŋɡwɪdʒ/adjective
1 US. Designating a course of study undertaken prior to the study of a (foreign or second) language.
2Prior to the emergence of language.
noun
1 US. A course of study undertaken prior to the study of a (foreign or second) language. rare.
2A form of communication preceding the emergence or acquisition of language.
3A hypothetical antecedent language; a proto-language.
Origin
Early 20th century. From pre- + language.