interlingual

adjective

in·​ter·​lin·​gual ˌin-tər-ˈliŋ-gwəl 

 also  -gyə-wəl

: of, relating to, or existing between two or more languages

interlingual dictionaries

Word History

Etymology

inter- + Latin lingua tongue, language — more at tongue

First Known Use

1854, in the meaning defined above