- A divice of gauze or wire, covering the mouth or nose,
to prevent the inhalation of noxious substances, as dust or smoke.
Being warmed by the breath, it tempers cold air passing through it, and
may also be used for the inhalation of medicated vapors.
Respiratory chin Respiratory chin is a sequence of oxidation-redaction reactions by which electrons are transferred from an oxidizable substrate to an exogenous
Definition
[ n.]