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Consult Chambers 21st Century Dictionary, The Chambers Thesaurus (1996) or Chambers Biographical Dictionary (1997 edition with amendments). Enter your search and choose your title from the drop-down menu.

Search results for 'oxygen mask':

oxygen mask noun a mask-like breathing apparatus that covers the nose and mouth, and is used to supply oxygen on demand, especially in rarefied atmospheres by mountaineers, aircraft passengers, etc.

oxygen mask noun a mask-like breathing apparatus that covers the nose and mouth, and is used to supply oxygen on demand, especially in rarefied atmospheres by mountaineers, aircraft passengers, etc.

oxygen mask noun a mask-like breathing apparatus that covers the nose and mouth, and is used to supply oxygen on demand, especially in rarefied atmospheres by mountaineers, aircraft passengers, etc.