life support Meaning, Definition & Usage
- 
       noun equipment that makes life possible in otherwise deadly environmental conditions
       
       
 life-support system.
 - the astronauts relied on their life-support systems
 
- 
       noun medical equipment that assists or replaces important bodily functions and so enables a patient to live who otherwise might not survive
       
       
 life-support system.
 - the patient is on life support