Euthydemus
Εὐθύδημος
(Εὐθύδημος).
1. A sophist, was born at Chios, and migrated with his brother Dionysodorus to Thurii in Italy. Being exiled thence, they came to Athens, where they resided many years. The pretensions of Euthydemus and his brother are exposed by Plato in the dialogue which bears the name of the former. A sophism of Euthydemus, as illustrating the " fallacy of composition," is mentioned by Aristotle. (Plat. Euthydemus, Cratyl. p. 386; Arist. Rhet. 2.24.3, Soph. El. 20; Ath. xi. p. 506b; Sext. Emp. ad v. Math. 7.13.)
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.