Breathalyzer meaning

brĕth'ə-lī'zər
A trademark for a device that detects and measures alcohol in expired air so as to determine the concentration of alcohol in a person's blood.
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A device that tests exhaled breath to indicate the amount of alcohol in the body or blood.
proper name
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Such a device.
noun
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A device that measures that blood alcohol content of a person by analyzing the content of the moisture in her breath. Usually used by police when a person is suspected of driving while intoxicated.
noun
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A device that measures alcohol in expired air so as to estimate the concentration of alcohol in a person's blood; used by traffic police in cases of suspected driving while under the influence of alcohol.
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Origin of breathalyzer

  • Blend of breath and analyzer. Originally a trademark of Smith & Wesson.
    From Wiktionary