(see entry in Perseus Encyclopedia) son of Agamemnon and Clytemnestra who avenges his father's death.

(Greek mythology) the son of Agamemnon and Clytemnestra; his sister Electra persuaded him to avenge Agamemnon's death by killing Clytemnestra and Aegisthus

Son of Agamemnon and Clytemnestra, notable for murdering his mother to avenge his father. Also an epithet for Enjolras, derived from the novel: "In the [alphabetic] series, O and P are inseparable. You can, as you choose, pronounce O and P, or Orestes and Pylades.... Grantaire was an unaccepted Pylades." Q.v.