Trītīa

ae, f.
I. an inland town of Achaia, near the confines of Elis, now Kastritzi, Cic. Att. 6, 2, 3.— Hence, Trittenses or Trītienses, ium, m., the inhabitants of Tritia, Plin. 4, 6, 10, § 22.
Lewis & Short
A Latin Dictionary, 1879
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