"(In Freudian theory) the complex of emotions aroused in a young child, typically around the age of four, by an unconscious sexual desire for the parent of the opposite sex and wish to exclude the parent of the same sex. (The term was originally applied to boys, the equivalent in girls being called the Electra complex.)", Early 20th century: by association with Oedipus.[Oedipus complex etymology, Oedipus complex origin, 英语词源]