rebreathed
Took air twice
Rebreathed is the past tense of rebreathe, meaning to breathe again air that has already been exhaled.
The term appears most often in medical and diving contexts, where rebreathed air poses risks from carbon dioxide buildup or oxygen depletion: The diver rebreathed from a closed-circuit system.
It can also describe stuffy, recycled air in poorly ventilated spaces.
Moved through a system again
- recoveredReturned to normal state
- reclaimedTaken back; salvaged
- reprocessedTreated or converted again
- filteredScreened to remove contaminants
scrubbed · purified · regenerated · closed-loop · spacecraft · submarine · atmosphere · ISS
Breathed out air
- inhaledDrew into lungs
- alveoliLung's gas-exchange chambers
- oxygenElement eight, colorless gas
- ventilationCirculation of fresh air
lungs · hypoxia · anesthesia · ventilator · mask · respiratory · exhalation · inhalation
Portable underwater breathing gear
- closed-circuitRestricted transmission system
- scrubberPollution removal device
- bailoutEmergency aid preventing bankruptcy
- nitroxEnriched air for diving
decompression · loop · mouthpiece · sorb · canister
recirculated
Moved through a system again
- recoveredReturned to normal state
- reclaimedTaken back; salvaged
- reprocessedTreated or converted again
filtered · scrubbed · purified · regenerated · closed-loop · spacecraft · submarine · atmosphere · ISS
exhaled
Breathed out air
ventilation · lungs · hypoxia · anesthesia · ventilator · mask · respiratory · exhalation · inhalation
scuba
Portable underwater breathing gear
- closed-circuitRestricted transmission system
- scrubberPollution removal device
- bailoutEmergency aid preventing bankruptcy
nitrox · decompression · loop · mouthpiece · sorb · canister
rebreathedfresh air
Unenclosed outdoor atmosphere
fresh · oxygenated · ventilated · uncontaminated · outdoor air