Entry 1 sense Webster, 1913 thaumaturgy /(tha̤`mȧ*tûr"jy̆)/ · thau·ma·tur·gy · IPA /ˈθɔməˌtɝd͡ʒi/ 01 n. The act or art of performing something wonderful; magic; legerdemain. 1. The act or art of performing something wonderful; magic; legerdemain.