- a masklike device placed or worn over the nose and mouth when inhaling supplementary oxygen from an attached tank.
Origin of oxygen mask
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for oxygen mask
Sitting there, eyes pained behind the transparent shield of his oxygen-mask, he stared at the rock.The Holes Around Mars
- 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
- 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.