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

Once combined with existing tariffs, Chinese medical gloves will be taxed at 70% at these new rates, masks and respirators at 45%, and syringes at 120%. —Eric Axel, Boston Herald, 22 Mar. 2025

Under the Louisiana protocol, which is nearly identical to Alabama's, officials had earlier said Hoffman would be strapped to a gurney before a full-face respirator mask fitted tightly on him. —arkansasonline.com, 19 Mar. 2025

Under Louisiana protocol, which is nearly identical to Alabama's, Hoffman will be strapped to a gurney and have a full-face respirator mask — similar to what is used by painters and sandblasters — fitted tightly on him. —CBS News, 18 Mar. 2025

Under the state's new procedure, Hoffman will be strapped to a gurney and forced to breathe pure nitrogen gas through a full-face respirator mask. —Mark Davis, Newsweek, 15 Mar. 2025

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