in Greek legend, a daughter of Leda and Tyndareus and wife of Agamemnon, commander of the Greek forces in the Trojan War. She took Aegisthus as her lover while Agamemnon was away at war. Upon his return, Clytemnestra and Aegisthus murdered Agamemnon. Clytemnestra was then killed by her son, Orestes, with the help of his sister Electra, in revenge for his father's murder.
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