Sorceress who was Circe's niece (5)

I believe the answer is:

medea

(Other definitions for medea that I've seen before include "Mythical wife who helped Jason get the Golden Fleece" , "Mythical enchantress" , "Tragic heroine" , "In Greek myth, Jason's wife who killed their children in jealous rage" , "Jason's sorceress" .)

I've seen this clue in the Universal.

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