開府儀同三司

(historical) Synonym of 准大臣 (Jun-daijin): title of an honorary grand minister equal to a vice-daijin; in the same honors between the 内大臣 (naidaijin, “minister of the center”) and the 大納言 (dainagon, “upper counselor”)

(historical) in China, an official consented by the 三公 (sankō, “sāngōng, three highest ranking officials in the imperial court”) to establish an office

(historical) Tang-dynasty equivalent of 従一位 (ju ichi-i): a nobleman of the junior first-rank under the 律令 (Ritsuryō) system