That saves life, or is suited to save life, esp. from drowning(adjective)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "life-saving" in a sentence
"And it stands to reason that if all children had received basic healthcare - defined as life-saving vaccinations and diarrhoea treatment - child mortality would have come down even further."
"Mackey says "wake-up" stroke sufferers are more likely to miss out on a potentially life-saving clot-busting medication called tissue plasminogen activator, or tPA, that can only be given within the first few hours after stroke symptoms begin."
"The Disposable Pre-Paid Phone could be that life-saving device, which could get you out of a sticky situation."