Amphiorkia
ἀμφιορκία
Amphiorkia or AMPHOMOSIA (ἀμφιορκία or ἀμφωμοδία), the oath which was taken, both by the plaintiff and defendant, before the trial of a cause in the Athenian courts, that they would speak the truth (Hesych., Suid.). In the ἀνάκρισις or preliminary investigation it was called διωμοσία. The notion of some grammarians (Pollux, 8.122; Bekker, Anecd. pp. 184, 9; 311, 23), that it was also applied to the judges' oath is a mistake.
From William Smith (ed.), Dictionary of Greek and Roman Antiquities. 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.