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oxygen mask

a masklike device placed or worn over the nose and mouth when inhaling supplementary oxygen from an attached tank.
Origin of oxygen mask
1915-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for oxygen-mask
Historical Examples
  • Sitting there, eyes pained behind the transparent shield of his oxygen-mask, he stared at the rock.

    The Holes Around Mars Jerome Bixby
British Dictionary definitions for oxygen-mask

oxygen mask

a device, worn over the nose and mouth, to which oxygen is supplied from a cylinder or other source: used to aid breathing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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oxygen-mask in Medicine

oxygen mask n.
A masklike device that is placed over the mouth and nose and through which oxygen is supplied from an attached storage tank.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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