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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A canopy placed over the head and shoulders or over the entire body of a patient to provide oxygen at a higher level than normal.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A canopy for the head and shoulders, or a similar enclosure for the whole body, within which air having a higher than normal supply of oxygen can be administered to a patient.


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