gallon: meaning, definition, pronunciation and examples
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Quick answer
What does “gallon” mean?
A unit of volume for measuring liquids.
Audio
Pronunciation
Definition
Meaning and Definition
A unit of volume for measuring liquids.
Primarily used as a standard measure for fuel (petrol/gasoline), milk, water, paint, and other bulk liquids in everyday, commercial, and industrial contexts.
Dialectal Variation
British vs American Usage
Differences
The UK (imperial) gallon and US (liquid) gallon are different sizes. 1 UK gallon ≈ 4.546 litres; 1 US gallon ≈ 3.785 litres. The difference matters for fuel economy (miles per gallon) and recipes.
Connotations
In the UK, associated with fuel efficiency (MPG), beer, and milk. In the US, strongly associated with gasoline prices, milk jugs, and large beverage containers.
Frequency
More frequent in US English due to the ubiquitous use in fuel and consumer product sales (e.g., gallon of milk).
Grammar
How to Use “gallon” in a Sentence
NUMERAL + gallon(s) + of + LIQUID (e.g., three gallons of water)NUMERAL + -gallon + CONTAINER (e.g., a five-gallon drum)Vocabulary
Collocations
Examples
Examples of “gallon” in a Sentence
verb
American English
- The car gallons through fuel on the highway. (informal, rare)
adjective
British English
- We bought a ten-gallon drum of oil.
- It's a fifty-gallon fish tank.
American English
- He bought a five-gallon bucket at the hardware store.
- She eyed the two-gallon container of ice cream.
Usage
Meaning in Context
Business
Used in pricing and selling bulk liquids (fuel, chemicals). 'The wholesale price rose to £1.20 per gallon.'
Academic
Used in scientific contexts (chemistry, engineering) when referencing older imperial/US customary data. 'The engine consumed 0.05 gallons per minute.'
Everyday
Used when buying fuel, milk, paint, or discussing car efficiency. 'My car does about 40 miles to the gallon.'
Technical
A defined unit in measurement systems. Precise conversion factors to litres are critical.
Vocabulary
Antonyms of “gallon”
Watch out
Common Mistakes When Using “gallon”
- Using it as an uncountable noun (e.g., 'We need gallon of water' instead of 'a gallon of water').
- Confusing UK and US gallon volumes in technical contexts.
- Misspelling as 'galon'.
FAQ
Frequently Asked Questions
No. The UK (imperial) gallon is about 4.546 litres, while the US (liquid) gallon is about 3.785 litres.
MPG stands for 'Miles Per Gallon', a measure of a vehicle's fuel efficiency.
No, it is a unit of volume for liquids. For dry goods in the US Customary system, a different unit called the 'dry gallon' exists but is very rarely used.
Using the wrong gallon can lead to significant errors in science, engineering, commerce, and even cooking, as the volumes differ by over 20%.
A unit of volume for measuring liquids.
Gallon is usually neutral in register.
Gallon: in British English it is pronounced /ˈɡælən/, and in American English it is pronounced /ˈɡælən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “A gallon of sweat saves a pint of blood. (proverb)”
Learning
Memory Aids
Mnemonic
Imagine a large GALLON jug of milk. The word sounds like 'gal-lon' - think of a 'gal' carrying a 'lon'g heavy jug of liquid.
Conceptual Metaphor
A CONTAINER FOR A LARGE VOLUME (e.g., 'He poured out gallons of praise.').
Practice
Quiz
Which statement about a 'gallon' is correct?