oronsol oxygen mask

oronsol oxygen mask
An oxygen mask covering only the mouth and the nose of the wearer.

Aviation dictionary. 2014.

Look at other dictionaries:

  • oxygen mask — A mask that covers the mouth, nose, and lower face. It is used in inhaling oxygen from a tank or a bottle or through the oxygen supply system of an aircraft and in allowing the expired gas to escape. See oronsol oxygen mask …   Aviation dictionary

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