PRISMATIC Meaning of PRISMATIC in English pris ‧ mat ‧ ic /prɪzˈmætɪk/ BrE AmE adjective 1 . using or containing a ↑ prism :a prismatic compass 2 . a prismatic colour is very clear and bright Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012