- Main Entry:
- gal·lon

- Pronunciation:
-
\ˈgal-ən\
- Function:
- noun
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