Automobile emissions testing is required in all or part of 33 states to help maintain the federal air quality standard. Areas that were in moderate nonattainment or worse for ozone in 1990 are included in Ohio's E-Check program. These areas include the metropolitan statistical areas of Cleveland and Akron.
Freebase(0.00 / 0 votes)Rate this definition: Alcohol proof. Alcohol proof is a measure of how much alcohol is contained in an alcoholic beverage. The term was originally used in the United Kingdom and was defined as 7/4 times the alcohol by volume.
'Proof' is a term that used to refer to whether or not alcohol - when poured over gunpowder - would ignite. Alcohol is now rated with a 'proof' equal to exactly twice it's alcohol content. Bud Light is 4.2% alcohol by volume in most of the U.S., so it would be 8.4 proof - though beer is rarely rated this way. Many other alcohols, like vodka and whiskey, are rated around 40% alcohol by volume in the bottle, or around 80 proof.