聖せい算さんせいさんMeanings1nounEmperor's ageHonorific term for the age of the reigning Emperor. Used in formal or historical contexts, especially in imperial household references.天皇てんのう陛へい下かの聖せい算さんは今年ことしで六ろく十じゅっ歳さいになられた。His Majesty the Emperor turned sixty this year.