rebreather

(redirected from Counterlung)
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Related to Counterlung: Oxygen rebreather

re·breath·er

 (rē-brē′thər)
n.
A usually portable, lightweight, vestlike breathing apparatus that recycles oxygen from exhaled air, absorbs exhaled carbon dioxide, and has a small container providing fresh air, used by scuba divers and astronauts, as well as rescue workers in environments where the air is thought to be toxic.