明めい応おうめいおうMeanings1nounMeiō era (1492–1501)Japanese era name spanning from July 19, 1492 to February 29, 1501 in the Julian calendar.明めい応おうの大だい地じ震しんは1498年ねんに発はっ生せいした。The great Meiō earthquake occurred in 1498.