Space blanket

World English Dictionary
space blanket
 
n
a plastic insulating body wrapping coated on one or both sides with aluminium foil which reflects back most of the body heat lost by radiation: carried by climbers, mountaineers, etc, for use in cases of exposure or exhaustion
 
[C20: material originally developed as part of the US space programme]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Dictionary.com's 21st Century Lexicon
Main Entry:  space blanket
Part of Speech:  n
Definition:  a covering made of an aluminum-coated plastic sheet, designed to retain heat in a person's body, esp. following trauma
Etymology:  1972
Dictionary.com's 21st Century Lexicon
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00:10
Space blanket is always a great word to know.
So is quincunx. Does it mean:
a fool or simpleton; ninny.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
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