The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
oxygen mask
1 ENTRIES FOUND:
oxygen mask
(noun)
oxygen mask
noun
plural
oxygen masks
oxygen mask
noun
plural
oxygen masks
Britannica Dictionary definition of OXYGEN MASK
[
count
]
:
a mask worn over your nose and mouth so that you can breathe oxygen from a storage tank
ASK THE EDITOR
When should I use
don't
and
doesn't
?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
contagious
:
able to be passed from one person or animal to another
Learn More »