gallon
UK: ˈɡælən | US: ˈɡælən
n. a unit of liquid capacity equal to four quarts (approximately 3.785 liters in the US, 4.546 liters in the UK).
The word "gallon" traces back to Old Northern French galon, derived from Late Latin galleta (a liquid measure). The root gall- likely originated from Gaulish or Celtic terms for vessels or containers, reflecting its historical use in trade and agriculture. The suffix -on standardizes it as a noun in English. Over time, the measurement became standardized differently in the US (based on the 18th-century British wine gallon) and the UK (imperial gallon).
The car's fuel tank holds 12 gallons of gasoline.
She bought a gallon of milk from the supermarket.
This recipe requires half a gallon of water.
The UK imperial gallon is larger than the US gallon.
Gas prices rose to $4 per gallon last summer.