Definitions
There are 2 meanings of the phrase
Life-Support System.
Life-Support System - as a noun
Equipment that makes life possible in otherwise deadly environmental conditions
Example: "The astronauts relied on their life-support systems"
Medical equipment that assists or replaces important bodily functions and so enables a patient to live who otherwise might not survive
Example: "The patient is on life support"
Example Sentences
"The astronaut was connected to a life-support system during his spacewalk."
"The hospital provided the patient with a life-support system to help him breathe."
"The diving suit included a built-in life-support system to supply oxygen underwater."
"The spacecraft carried a redundant life-support system to ensure the safety of the crew."
"The engineer inspected the life-support system to identify any potential malfunctions."