<Tr> <Th> Symbol </Th> <Td> l (l) or L </Td> </Tr> <Tr> <Th> In SI base units: </Th> <Td> 1 L = 10 m </Td> </Tr> <P> The litre (SI spelling) or liter (American spelling) (SI symbols L or l, commonly, but incorrectly, abbreviated as ltr) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm), 1,000 cubic centimetres (cm) or 1 / 1,000 cubic metre . A cubic decimetre (or litre) occupies a volume of 10 × 10 × 10 centimetres (see figure) and is thus equal to one - thousandth of a cubic metre . </P> <P> The original French metric system used the litre as a base unit . The word litre is derived from an older French unit, the litron, whose name came from Greek--where it was a unit of weight, not volume--via Latin, and which equalled approximately 0.831 litres . The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI, although not an official SI unit--the SI unit of volume is the cubic metre (m). The spelling used by the International Bureau of Weights and Measures is "litre", a spelling which is shared by almost all English - speaking countries . The spelling "liter" is predominantly used in American English . </P>

What is the si unit of measurement for volume