Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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life-support of or pertaining to equipment or procedures that can sustain life, either when a bodily system fails or when a living body is in a hostile environment, such as space.
life-support system a system of equipment, esp. in a hospital, that keeps a person alive when he or she might otherwise die. [2 definitions]
price support the maintenance of certain price levels by means of public subsidy or by government surplus purchasing.
self-support the act of providing or ability to provide for oneself without external help.