Klingonian adjective2 •Pertaining to, resembling, or characteristic of, Klingons.The Klingon banquet features Klingonian food, games and a variety show. — 2008 •Pertaining to, resembling, or characteristic of, the Klingon language.‘Manga’. No matter how Klingonian this sounds to you, it has been a worldwidely-known word since 1990. — 2005 formsmore Klingonian · most Klingonian