Definition of 神武以来 (じんむいらい)

no-adjective, adverbial noun, noun (temporal)
•
since the era of the Emperor Jinmu, (first ever) since the dawn of Japan's history, unprecedented(yojijukugo)
Other readings:
神武以来【じんむこのかた】
Related Kanji
神 gods, mind, soul
武 warrior, military, chivalry, arms
以 by means of, because, in view of, compared with
来 come, due, next, cause, become