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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.
References in periodicals archive ?
Lambertsen, was an oxygen rebreather that emitted no bubbles.
In a case of an oxygen rebreather, since the air used is pure oxygen, it cannot be used in any depth below 20 feet where it becomes toxic.
Underwater Demolition Team members, diving Draeger Lt Lungll, used a closed-circuit, oxygen rebreather in the '50s.