Also a name for
magic and
spellcasting in general, if the implied usage in the
Zork series is to be believed.
Necromancers,
Enchanters,
Spellweavers, and all the such were all practitioners of Thaumaturgy.
Some of the more popular Zorkian spells were
Frotz,
Rezrov,and
Yomin, but not
Plugh and
Xyzzy.