Litreja

Litreja is the plural form of the unit liter used in some languages, notably Finnish, to refer to multiple litres. In everyday language and in packaging, recipes, and commerce, litres are used to measure and label quantities of liquids and other substances.

A liter (symbol L or l) is a unit of volume in the metric system. It is defined as one cubic decimeter, which is equal to 1000 cubic centimeters. In SI terms, the liter is a non-SI unit that is accepted for use with SI and is widely employed around the world for practical measurement of liquids. The liter is related to other common volume units: 1 liter equals 1000 milliliters (mL), 1 liter equals 0.001 cubic meters (m³), and it can be subdivided into deciliters (dL) and centiliters (cL).

The liter's widespread use makes it standard for consumer goods, cooking, beverages, fuel, and laboratory work. In scientific contexts, volumes are sometimes expressed in cubic meters or milliliters, depending on scale, but the liter remains the practical everyday unit for liquids and small to medium-scale volumes. The symbol most commonly used is L, though lowercase l is also seen in some contexts to avoid confusion with the numeral 1.

In summary, litreja denotes the plural of the liter in languages that form plurals this way, while the liter itself is the widely used metric unit for measuring liquid volumes, defined as one cubic decimeter and equal to 1000 cubic centimeters.