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Definition gallon in British English

gallon noun

[countable] noun
/ˈɡælən/
1

a unit for measuring an amount of liquid, especially petrol or water. In the UK, a gallon is equal to 4.55 litres. In the US, a gallon is equal to 3.79 litres. A gallon contains 8 pints or 4 quarts

Example

a gallon of petrol

Synonyms and related words
Definition gallon in British English