rejuvenescence
/ˌriːdʒuːvɪˈnesəns/noun
mass noun
1- the renewal of youth or vitality回春; 青春活力的恢复。
1.1
- Biology the reactivation of vegetative cells, resulting in regrowth from old or injured parts【生】复壮（现象）。
派生词
rejuvenescent
adjective词源
mid 17th cent.: from late Latin rejuvenescere （from Latin re- 'again' + juvenis 'young'） + -ENCE.