usage: equipment that makes life possible in otherwise deadly environmental conditions; "the astronauts relied on their life-support systems"
2. life-support system, life support, equipment
usage: 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"
Adjective
1. life-support
usage: of or pertaining to equipment or methods used to sustain life