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Definition of gallon

gallon

/ˈɡæl.ən/
gal · lon

Plural:gallons
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gallon Lexical Profile

gallon Game Scores & Validity

• noun

1

A unit of volume for liquid measure equal to four quarts or eight pints, equivalent to 3.785 liters in the United States and 4.546 liters in the British imperial system.

Example

"She stopped at the grocery store on her way home to buy a gallon of milk."


2

A very large amount of a liquid (usually used in the plural).

Example

"The marathon runners drank gallons of water to stay hydrated in the summer heat."

Synonyms
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Antonyms
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Word Nuance & Usage

The US liquid gallon (approximately 3.785 liters) and the British imperial gallon (approximately 4.546 liters) represent significantly different volumes, which is an important distinction in international trade and fuel economy calculations.

• Rhymes for gallon

Word Origin & Etymology

Borrowed into Middle English around 1300 from Old Northern French 'galon' (Old French 'jalon'), meaning a liquid measure or large bowl, possibly of Celtic origin.

Cite this Entry


Wordmom. (2026). Definition of Gallon. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/gallon
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