the GNU version of the Collaborative International Dictionary of English
n. A miracle worker; -- a title given by the Roman Catholics to some saints.
The Century Dictionary and Cyclopedia
n. A thaumaturge or thaumaturgist: used especially as a title of Gregory Thaumaturgus (bishop of Nescæsarea in Pontus in the third century), from the numerous and wonderful miracles ascribed to him.
Word Usage
"And the thaumaturgus, who was supposed to be the heir of the archaic priests, assumed a wholly sacerdotal appearance at Rome."