1. the amount or quantity measured in gallons

Examples

• The gallonage of water used by the factory increased significantly this year.
• We need to calculate the gallonage of fuel required for the trip.
• The tank's gallonage is clearly marked on the side.
• The city reduced its daily gallonage of water consumption by 15 percent.
• The gallonage of milk produced by the dairy farm has doubled since last season.