alcohol by volume; ABV
Technical term used on beverage labels and in discussions of alcoholic strength. Often abbreviated as ABV in English contexts.
このビールのアルコール度数は5%です。
This beer has an alcohol by volume of 5%.
アルコール度数が高いお酒は、少量でも酔いやすい。
Drinks with a high ABV can make you drunk easily even in small amounts.
Compound of アルコール (alcohol) and 度数 (degree/number), a direct translation of 'alcohol by volume'.