嘉か永えいかえいMeanings1nounKaei era (1848.2.28-1854.11.27)historical termHistorical Japanese era name; used in historical contexts to refer to the period from 1848 to 1854.嘉か永えい年ねん間かんにペリーが来らい航こうした。Perry arrived during the Kaei era.