respirator

noun

res·​pi·​ra·​tor ˈre-spə-ˌrā-tər 

plural respirators

1

: a mask or device worn over the mouth and nose to protect the respiratory system by filtering out dangerous substances (such as dusts, fumes, or bacteria) from inhaled air

Note: Particulate respirator masks are only able to filter out particles and are not effective against gases or vapors. A numerical rating (such as 95 or 99) is sometimes assigned to such a respirator to indicate the percentage of airborne particles filtered. A letter may also be assigned to indicate whether it is somewhat resistant (R), not resistant (NR), or strongly resistant (P) to the degrading effects of oil on proper respirator function.

2

: a device for maintaining artificial respiration : ventilator sense b

Examples of respirator in a Sentence

Recent Examples on the Web

But in 2024, the state began carrying out some executions using nitrogen gas, which involves replacing breathable air with gas through a respirator mask, causing death from lack of oxygen. — CBS News, 17 Sep. 2026

Peter remembers chicken wings, the foul Lower Manhattan air, and buying an industrial respirator at a hardware store. — Stephen Rodrick, Rolling Stone, 11 Sep. 2026

As the war raged on, this makeshift countermeasure was replaced by more sanitary and effective innovations, including gauze pads soaked in hyposulfite solution, flannel hoods, tube helmets, and box respirators. — Encyclopedia Britannica, 19 Aug. 2026

Under this law, employers are required to take steps to protect workers, such as providing protective respirators and using water to suppress dust, when employees are cutting, grinding or polishing slabs. — Clara Harter, Los Angeles Times, 12 Aug. 2026

Word History

First Known Use

1836, in the meaning defined at sense 1

Rhymes for respirator

• activator
• actuator
• agitator
• alligator
• allocator
• alternator
• animator
• annotator
• applicator
• arbitrator
• aspirator
• aviator

Kids Definition

respirator

noun

res·​pi·​ra·​tor ˈres-pə-ˌrāt-ər 

1

: a device covering the mouth and nose especially to prevent the breathing in of harmful substances (as dust or fumes)

2

: a device used to maintain artificial respiration

Medical Definition

respirator

noun

res·​pi·​ra·​tor ˈres-pə-ˌrāt-ər 

1

: a mask or device worn over the mouth and nose to protect the respiratory system by filtering out dangerous substances (as dusts, chemical fumes, or bacteria) from inhaled air

Note: Particulate respirator masks are only able to filter out particles and are not effective against gases or vapors. A numerical rating (such as 95 or 99) is sometimes assigned to a particulate respirator to indicate the percentage of airborne particles filtered. A letter may also be assigned to indicate whether it is somewhat resistant (R), not resistant (NR), or strongly resistant (P) to the degrading effects of oil on proper respirator function.

2

: a device for maintaining artificial respiration : ventilator