Dionysius
11. A native of BITHYNIA, a dialectic or Megaric philosopher, who was the teacher of Theodorus the atheist. (Strab. xii. p.566; D. L. 2.98.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.