安あん政せいあんせいFreq.FrequencyTop 50,000Meanings1nounAnsei era (1854.11.27–1860.3.18)Japanese era name (年号) corresponding to the late Edo period. Often used in historical contexts.安あん政せいの大だい地じ震しんは1855年ねんに発はっ生せいした。The Great Ansei Earthquake occurred in 1855.