criterial UK /kɹaɪ̯ˈtɪə̯.ɹɪəl/US /kɹajˈtiːɹiəl/ adjective1 •Which is based on, pertains to, or constitutes criteria.The Wimmera language and Tjapwurrung can be distinguished by the following criterial words: […] — 1993 formsmore criterial · most criterial