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† cardĭăcus, a, um, adj., = καρδιακός, of or pertaining to the heart or stomach: morbus, cardialgia or heart-burn, Cels. 3, 19; Cael. Aur. Acut. 2, 30 sq.; Plin. 11, 37, 71, § 187: amicus, suffering from a disease of the stomach, Juv. 5, 32: equus, Veg. Vet. 1, 25, 2: bos, id. ib. 1, 51, 1.
Hence, subst.: cardĭăcus, i, m., one who has heart-burn or stomach-ache, Cic. Div. 1, 38, 81; Hor. S. 2, 3, 161; Sen. Ep. 15, 3; cured by wine, Cels. l. l., Plin. 23, 1, 23, § 44; Juv. l. l.