- being or becoming youthful; young.
- young in appearance.
- having the power to make young or youthful: a juvenescent elixir.
- youth or immaturity
- the act or process of growing from childhood to youth
- restoration of youth; rejuvenation
- becoming or being young or youthful
1821, from Latin iuvenescentem (nominative iuvenescens), present participle of iuvenescere “to grow into youth,” from iuvenis “young” (see young).