Explore Words Kanji Grammar Guides

Copyright © 2026 Kotomora. All Rights Reserved.

Get the Kotomora apps for iOS and Android.

Explore Words Kanji Grammar Guides About Support Privacy

Copyright © 2026 Kotomora. All Rights Reserved.

春機発動期 (しゅんきはつどうき) Japanese meaning | Kotomora

春しゅん機き発はつ動どう期き

しゅ

ん

き

は

つ

ど

う

き

Meanings

1

Formal, somewhat clinical term for the period when sexual maturity begins. Often used in medical or educational contexts.

春しゅん機き発はつ動どう期きには、心しん身しんともに大おおきな変へん

化か

が

起お

こる

。

During puberty, significant changes occur both mentally and physically.

Kanji

春springtime, spring (season)
機loom, mechanism, machine
発departure, discharge, publish
動move, motion, change
期period, time, date

Related words

思し春しゅん期き
More common and general term for adolescence/puberty. 春機発動期 is more formal and specifically emphasizes the onset of sexual maturity.

Built from

春しゅん機き+発はつ動どう+

Etymology

Compound of 春機 (sexual awakening) + 発動 (activation) + 期 (period). The exact historical derivation is uncertain; the spelling is conventionally associated with the onset of puberty.

期き