Isthmius
Ἴσθμιος
(Ἴσθμιος), i. e. the god worshipped on the Isthmus (of Corinth), a surname of Poseidon, in honour of whom the Isthmian games were celebrated. (Paus. 2.9.6 )
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.