I.a Roman surname: plancae tabulae planae, ob quam causam et planci appellantur qui supra modum pedibus plani sunt, Paul. ex Fest. p. 231 Müll.: “vola homini tantum, exceptis quibusdam: namque et hinc cognomina inventa Planci, Plauti, Scauri, Pansae,” Plin. 11, 45, 105, § 254: plancus, πλατύπους, Gloss. Cyrill.: στεγανόποδες, planci, Gloss. Gr. Lat. So, Munatius Plancus, v. Munatius.—Hence,
II. Plancĭānus , a, um, adj., Plancian: Diana, who had a shrine in the house of the Planci, Viscont. Mus. Pio Clem. 2, p. 21 Mediol.
