a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints)
"When I measured out exactly two litres for the recipe, it was surprisingly close to four large glasses."
The metric unit of fluid measure, equal to one cubic decimetre. Symbols: l, L, ℓ
"She measured exactly two litres of milk from the carton for her morning coffee."