noun
convalescence
kahn-vuh-LESS-unts/ˌkɑːnvəˈlesns/
The period of regaining health and strength after illness or injury.
During her convalescence, she rests often and takes short walks.

Etymology
Beginning to grow strong supplies the image behind this recovery period: strength and health are gradually returning. The prefix may reinforce the idea, but that function is not certain here.
In context
I wrote and this exertion greatly fatigued me but my convalescence had commenced and proceeded regularly in another Fortnight I was able to leave my chamber
More examples
- His convalescence after knee surgery lasts several weeks.
- Friends bring meals to help with my convalescence.
- A quiet room makes convalescence easier after a severe illness.
Forms
convalescence · convalescences
convalesce verb — Regain health and strength after illness or injury.
convalescent adjective — Recovering health after illness or injury.
Similar words
- recovery
- Broader term covering improvement after illness, loss, or setbacks.
- recuperation
- Emphasizes regaining strength, including after exertion rather than illness.