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Meaning of OXYGEN MASK
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WordNet Dictionary
Definition:
[n]
a
breathing
device
that
is
placed
over
the
mouth
and
nose
;
supplies
oxygen
from
an
attached
storage
tank
 
See Also:
aqualung
,
Aqua-Lung
,
breathing apparatus
,
breathing device
,
breathing machine
,
scuba
,
ventilator
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