Definition of Theseus in US English:

Theseus

proper noun

Greek Mythology
  • The legendary hero of Athens, son of Poseidon (or, in another account, of Aegeus, king of Athens) and husband of Phaedra. He slew the Cretan Minotaur with the help of Ariadne.

Pronunciation

Theseus

/ˈTHēsēəs//ˈθisiəs/