Demogorgon /(dē"mō̇*gôr*gŏn [or] dĕm"ō̇-)/
De·mo·gor·gon
Demogorgon
n.
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A mysterious, terrible, and evil divinity, regarded by some as the author of creation, by others as a great magician who was supposed to command the spirits of the lower world. See Gorgon.
Orcus and Ades, and the dreaded name Of Demogorgon.