oxygen mask



a masklike device placed or worn over the nose and mouth when inhaling supplementary oxygen from an attached tank.

Nearby words

  1. oxygen debt,
  2. oxygen deficit,
  3. oxygen demand,
  4. oxygen effect,
  5. oxygen lance,
  6. oxygen tent,
  7. oxygen toxicity,
  8. oxygen weed,
  9. oxygen-deprivation theory of narcosis,
  10. oxygenase

Origin of oxygen mask

First recorded in 1915–20

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for oxygen mask

  • Sitting there, eyes pained behind the transparent shield of his oxygen-mask, he stared at the rock.

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

Medicine definitions for oxygen mask

oxygen mask


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.