Tychacum the original name of a Temple of Portune at Antioch, which was turned into a church, and called by the name of Ignatius by Theodosius. See Bingham, Christ. Antiq. bk. 8ch. 3, § 4. Tyche, in Greek mythology, is identical with Fortuna of the Romans. Pindar calls her a daughter of Jupiter. She possessed at Thebes, and at numerous other places, temples and monuments.