Lewis & Short

Cardĭa, ae, f., = Καρδία, a town on the Thracian Chersonesus, on the gulf Melas, the birthplace of Eumenes, Mel. 2, 2, 8; Plin. 4, 11, 18, § 48.
Deriv.: Cardĭā-nus, a, um, adj., of Cardia: Eumenes, Nep. Eum. 1, 1.