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English definition of “gallon”

gallon

noun [C]
 
 
/ˈɡælən/ (written abbreviation gal.)
a unit for measuring liquid, equal to 4.546 litres in the UK and 3.785 litres in the US Measurements of volumeGeneral words for size and amountInformal measurements of volumeArea, mass, weight and volume in general
(Definition of gallon from the Cambridge Learners Dictionary © Cambridge University Press)
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