1.NounA device to assist breathing.
A facemask with integrated filter(s) to keep out harmful dusts, fumes, and mists.
"Any N95 respirator is designed to filter out 95 percent of particles 0.3 microns or larger.; The painters in the paint booth were wearing the kind of respirators with dual filter canisters."
2.NounA facemask with integrated filter(s) to keep out harmful dusts, fumes, and mists.
"Any N95 respirator is designed to filter out 95 percent of particles 0.3 microns or larger.; The painters in the paint booth were wearing the kind of respirators with dual filter canisters."