adjective
- becoming young again.
- making young again; rejuvenating.
“renewal of youth,” 1630s, from Latin rejuvenescere, from re- “again” (see re-) + juvenescere “become young,” from juvenis “young” (see young (adj.)) + -ence.
1763, from Medieval Latin rejuvenescentem (nominative rejuvenescens), present participle of rejuvenescere (see rejuvenescence).