(Ξενιάδης).
1. A Greek philosopher, a native of Corinth. The age when he flourished is uncertain. The little that we know of him is derived from Sextus Empiricus, who represents him as holding the most ultra sceptical opinions, and maintaining that all notions are false, and that there is absolutely nothing true in the universe (Adv. Math. 7.388, 399). What Sextus knew of him seems to have been derived from Democritus (ib. 7.53). He more than once couples him with Xenophanes (Pyrrh. Hyp. 2.18, ad v. Math. 7.48). Perhaps his representations may be as exaggerated in the one case as in the other (comp. XENOPHANES).