(in Britain and North America) a unit for measuring liquid. In the UK, Canada and other countries it is equal to about 4.5 litres; in the US it is equal to about 3.8 litres. There are four quarts in a gallon.加仑（液量单位，在英国、加拿大及其他一些国家约等于 4.5 升，在美国约等于 3.8 升，一加仑为四夸脱）- The tankers carried 130 000 gallons of fuel.这些油轮载有13万加仑的燃料。
Topics Maths and measurementc1Word OriginMiddle English: from Anglo-Norman French galon, from the base of medieval Latin galleta, galletum ‘pail, liquid measure’, perhaps of Celtic origin.