breathalyzer

(redirected from Preliminary Breath Test)
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Breathalyzer

[breth′əlī′zər]
a trademark for a device that analyzes exhaled air. It is commonly used to test for blood alcohol levels; the test is based on the relationship between alcohol in the breath and alcohol in the blood circulating through the lungs. Also spelled Breathalyser.

breathalyzer

Public health A device used to detect alcohol on a suspected drunk driver's breath; see DWI.
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