oxygen mask

American  

noun

oxygen masks plural

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

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oxygen mask British  

noun

1. a device, worn over the nose and mouth, to which oxygen is supplied from a cylinder or other source: used to aid breathing

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Other Word Forms

Noun Inflected Forms

• oxygen masks
  plural

Etymology

Origin of oxygen mask

First recorded in 1915–20

Example Sentences

I don’t like to spout clichés, but you do have to put your own oxygen mask on first in this situation.

From MarketWatch • Mar. 11, 2026

“To be clear: had I not donned my oxygen mask on that July flight, we would have killed every person on that aircraft,” Tellman wrote in a letter to his union detailing the experience.

From The Wall Street Journal • Dec. 22, 2025

Like they say on airplanes, put on your own oxygen mask before helping others with theirs.

From Los Angeles Times • Dec. 10, 2025

TV images showed Katoa being fitted with an oxygen mask and put on a stretcher.

From Barron's • Nov. 3, 2025

Then I got an oxygen mask from the medical supplies and some lab goggles from Vogel's chem kit.

From "The Martian" by Andy Weir