noun
Technical term for the weight of water displaced by a vessel's hull, used in naval architecture and ship specifications.
この貨物船の排水量は5万トンです。
The displacement of this cargo ship is 50,000 tons.
noun
volume of wastewater
Used in environmental and civil engineering contexts to refer to the amount of water discharged from a facility or area.
工場の排水量が基準を超えている。
The factory's wastewater volume exceeds the standard.