My last thread got me thinking about this. Sorry, it's a stream of consciousness thing. Blame Joyce.
Anyway, from Merriam Webster Online:
Main Entry: nec·ro·man·cy
Pronunciation: \ˈne-krə-ˌman(t)-sē\
Function: noun
Etymology: alteration of Middle English nigromancie, from Anglo-French, from Medieval Latin nigromantia, by folk etymology from Late Latin necromantia, from Late Greek nekromanteia, from Greek nekr- + -manteia -mancy
Date: 1522
1 : conjuration of the spirits of the dead for purposes of magically revealing the future or influencing the course of events
2 : magic, sorcery
— nec·ro·man·cer \-sər\ noun
— nec·ro·man·tic \ˌne-krə-ˈman-tik\ adjective
— nec·ro·man·ti·cal·ly \-ti-k(ə-)lē\ adverb
Now, if a Necromancer is a magician who conjures the dead, can this lead us to believe that Sauron conjured the dead in some way?
This might seem obvious, considering his nine best buddies, but remember that the Nazgul's status as undead is kinda questionable. After all, they are not ghosts in the way that the Dead Men of Dunharrow are. Did they ever really die, or just continue without gaining more life?
Is there any indication in the books that Sauron uses necromancy?