1. [n]  medical equipment that assists or replaces important bodily functions and so enables a patient to live who otherwise might not survive; "the patient is on life support"
2. [n]  equipment that makes life possible in otherwise deadly environmental conditions; "the astronauts relied on their life-support systems"
3. [adj]  of or pertaining to equipment or methods used to sustain life

Life Support
Toby Harpur, a 39-year-old emergency-room doctor, uncovers the secrets behind a bizarre rash of patient abductions and fatal mistakes at a Boston hospital.

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