The oxygen mask
Example: Oxygen mask supplies air during cabin pressure emergencies
Definition
"The oxygen mask" is a device worn over the nose and mouth that supplies breathable oxygen, especially used during cabin pressure emergencies in air travel to help passengers breathe safely when the aircraft cabin loses pressure.
Etymology
The term "oxygen mask" combines "oxygen," derived from Greek roots meaning 'acid producer,' reflecting the element's chemical properties, and "mask," from Latin "masca," meaning a ghost or specter, later evolving to mean a facial covering. The phrase became common with the rise of aviation in the 20th century to describe equipment providing oxygen to passengers.
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"The oxygen mask" appears in the Vocaplus list "English - Air travel & Aviation - (A1-C2) - set 1", containing 110 commonly used words.
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