life-saving
US /ˈlaɪfˌseɪvɪŋ/
UK /ˈlaɪfˌseɪvɪŋ/

1.
used to describe something that saves or is intended to save someone's life
:
•
The doctor performed a life-saving operation.
•
Wearing a helmet can be a life-saving measure for cyclists.
used to describe something that saves or is intended to save someone's life