(Greek mythology) the daughter of Agamemnon and Clytemnestra; persuaded her brother (Orestes) to avenge Agamemnon's death by helping her to kill Clytemnestra and her lover (Aegisthus)
Any of several mythical women, including a daughter of Agamemnon and Clytemnestra, one of the Pleiades, and one of the daughters of Oceanus and Tethys.