Entry 1 sense Webster, 1913 Numismatic /no͞omˌ-ĭs-măt'-ĭk/ · Nu·mis·mat·ic · IPA /nˌuːmɪsmˈætɪk/ 01 a. Of or pertaining to coins; relating to the science of coins or medals. 1. Of or pertaining to coins; relating to the science of coins or medals.