gal·​lon | \ ˈga-lən How to pronounce gallon (audio) \

Definition of gallon

: a unit of liquid capacity equal to 231 cubic inches or four quarts — see Weights and Measures Table

Examples of gallon in a Sentence

Recent Examples on the Web

That could in turn push up prices on everything from travel to a gallon of gas at the pump. Tali Arbel,, "Oil prices surge after Saudi plant attack — likely to raise airline fuel costs, Asian export prices and what you pay at the pump," 16 Sep. 2019 Nothing but see-through totes and gallon-sized freezer bags. Jeremy Henderson, al, "Auburn Gameday: Complete Fan Guide for Auburn vs. Kent State," 13 Sep. 2019 The rally comes as more than 100 million gallons of highly polluted water flowed through the Tijuana River since Sept. 4, shuttering shorelines in Imperial Beach since last weekend. San Diego Union-Tribune, "Local leaders call for permanent funding to protect National Wildlife Refuge recently basted by sewage," 13 Sep. 2019 Cars will have to produce no more than 95 grams of CO2 per kilometer, the equivalent of requiring mileage of 66 miles per gallon under U.S. measurements. David Mchugh, USA TODAY, "Volkswagen places massive bet on electric cars: Will consumers buy in?," 9 Sep. 2019 Fans attending events at the X will be allowed to carry a clear tote (plastic, vinyl or PVC) no larger than 12 by 6 by 12 inches or a plastic storage bag one gallon or smaller that’s resealable and clear. Ross Raihala, Twin Cities, "Xcel Energy Center announces new policies for bags and stops allowing fans to step outside to smoke," 9 Sep. 2019 As for my first car that got about 8 miles to the gallon — forgettaboutit. Dp Opinion, The Denver Post, "Letters: Country must move forward; Libraries are not shelters; Trump looking at cost of doing business with China (9/2/19)," 3 Sep. 2019 The Global SuperTanker, a Boeing 747-400 jet retrofitted to haul up to 20,000 gallons of water and fire retardant, has been contracted by the Bolivian government to help fight fires in the Amazon. Jennifer Leman, Popular Mechanics, "This 747 Is Fighting Fires in the Amazon," 28 Aug. 2019 The details of the operation, which involves a drill and gallons of saline solution, shed light on how routine Andrews has made a complex procedure seem. The Si Staff,, "100 Figures Who Shaped the NFL’s First Century," 28 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'gallon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of gallon

13th century, in the meaning defined above

History and Etymology for gallon

Middle English galun, galoun, galon, a liquid measure, borrowed from Anglo-French galun, galon, jalon, from Old French jal-, base of jaloie "container for liquids, bucket" (going back to Vulgar Latin *gallēta, of uncertain origin) + -on, diminutive or particularizing suffix, going back to Latin -ō, -ōn-, suffix of persons with a prominent feature

Note: Presumed *gallēta (attested as Medieval Latin galeta "wine vessel, liquid measure" in 11th-century texts) has been linked to several classical Greek words for containers, as kálathos "kind of basket, wine cooler," kēlástra "milk pail" (so glossed by Hesychius), though none of these fit formally; on the other hand, kēlḗtēs, kalḗtēs "sufferer from a hernia" (from kḗlē, kálē "tumor, hernia"; see -cele) fits formally but requires a contextual and semantic leap ("one swollen or ruptured" > "container"?).

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Statistics for gallon

Last Updated

16 Oct 2019

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Time Traveler for gallon

The first known use of gallon was in the 13th century

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More Definitions for gallon



English Language Learners Definition of gallon

US : a unit of liquid measurement equal to four U.S. quarts or 3.785 liters
British : a unit of liquid measurement equal to four British quarts or 4.546 liters


gal·​lon | \ ˈga-lən How to pronounce gallon (audio) \

Kids Definition of gallon

: a unit of liquid capacity equal to four quarts (about 3.8 liters)


gal·​lon | \ ˈgal-ən How to pronounce gallon (audio) \

Medical Definition of gallon

1 : a United States unit of liquid capacity equal to four quarts or 231 cubic inches or 3.785 liters
2 : a British unit of liquid and dry capacity equal to four quarts or 277.42 cubic inches or 4.544 liters

called also imperial gallon

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More from Merriam-Webster on gallon

Rhyming Dictionary: Words that rhyme with gallon

Spanish Central: Translation of gallon

Nglish: Translation of gallon for Spanish Speakers

Britannica English: Translation of gallon for Arabic Speakers Encyclopedia article about gallon

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