Zeuxis (zōkˈsĭs) [key], fl. 5th cent. B.C., Greek painter. According to tradition he settled in Ephesus, was an intimate (possibly a pupil) of Apollodorus, and aided in developing a technique for painting light and shadow. Although none of his paintings survives, they are known through ancient writings. Pliny speaks of his competing with Parrhasius for realistic illusion.