the daughter of Agamemnon, who was obliged to offer her as a sacrifice to Artemis when the Greek fleet was becalmed on its way to the Trojan War. However, Artemis saved her life and took her to Tauris in the Crimea, where she became a priestess until rescued by her brother Orestes.
Iphigenia in other Oxford dictionaries
Definition of Iphigenia in the US English dictionary