Appius, ii, m., and Appia, ae, f. (abbrev. App.). A Roman praenomen, esp. of persons of the gens Claudia; hence, Appius, a, um,
adj., Appian. Appia via, the Appian Way, a well-known high - road, begun by the censor Appius Claudius Caecus (about 442 A. U. C.), which began in Rome at the Porta Capena, and passed in a direct line to the Albanian Mountains, and thence through the Pontine Marshes to Capua; later it was continued to Brundisium, perh. by Trajan (the stones were large polygons of basaltic lava; parts here and there are yet in existence), Cic. Imp. Pomp. 18, 55; id. Mil. 6, 15; id. ad Q. Fr. 1, 1, 6; id. Phil. 7, 1, 1; Liv. 9, 29, 6; Front. Aquaed. 5; Inscr. Orell. 131; cf. Mull. Roms Camp. 2, 230.
—Called also Appī via, Hor. Ep. 1, 6, 26; and simply Appia, id. Epod. 4, 14, al.; Cic. Att. 2, 12.
— Appia aqua, the aqueduct which this same Appius constructed; Front. Aquaed. 5; cf. Liv. 9, 29.
— Appii Forum, a small market-town in Latium, founded by the same Appius, on the left side of the Via Appia, in the midst of the Pontine Marshes, now Foro Appio, Hor. S. 1, 5, 3; Vulg. Act. 28, 15; cf. Mann. Ital. I. 637 and 638.