n]
| a common unit of capacity in English-speaking countries, equal to four quarts, the U.S. standard gallon being equal to 231 cubic inches (3.7853 liters), and the British imperial gallon to 277.42 cubic inches (4.546 liters). Abbreviation: gal. |

gal·lon (gāl'ən) n.
[Middle English, a liquid measure, from Old North French galon.] |
gallon gal·lon (gāl'ən)
n.
Abbr. gal.
A unit of volume in the U.S. Customary System, used in liquid measure, equal to 4 quarts, 231 cubic inches, or 8.3389 pounds of distilled water (3.7853 liters).