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DictionarygallonLiquid measure
noun

gallon

GAL-un/ˈɡælən/

A unit of liquid volume equal to four quarts.

The gallon container holds as much liquid as the four quart containers.

A physical capacity comparison: one transparent gallon container beside four transparent quart containers arranged two by two, with matching combined liquid dimensions.
Etymology
gallonOld North Frenchliquid measure

Galon named a liquid measure and was related to a word for “bowl,” perhaps as an enlarged form. This links the measure’s history with containers and the quantities they hold.

In context

MS NOW1:32
NOT THAT HIGH. YOU KNOW, GAS WERE EVERYBODY IN THE COUNTRY HAS GOT FOUR, THERE'S NOT A PLACE IN THE COUNTRY YOU CAN GET GAS FOR LESS THAN $4 A GALLON
Joe PRAISES Talarico for 'one of the best comebacks' during Fox News interview

More examples

  • She bought a gallon of milk.
  • The tank held several gallons.
  • One gallon remained.

Forms

gallon · gallons

Similar words

quart
One fourth of a gallon in the same measuring system.
liter
A metric unit rather than an American customary measure.