n. In Greek antiquity: A sacred recorder; a deputy of the more honorable class sent by an amphictyonic state to the Delphic Amphictyonic Council. The title of a class of priests in several Greek states, as Megara, Thasos, etc. In certain states, as Byzantium, the hieromnemon was one of the chief magistrates.n. In the Gr. Ch., one of the officials of the patriarchal see of Constantinople.