<Table> <Tr> <Td> </Td> <Td> Look up hectometre in Wiktionary, the free dictionary . </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> Look up hectometre in Wiktionary, the free dictionary . </Td> </Tr> <P> The hectometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: hm) or hectometer (American spelling) is an uncommonly used unit of length in the metric system, equal to one hundred metres . It derives from the Greek word "ekato", meaning "hundred". A soccer field is approximately 1 hectometre in length . The hectare (ha), a common metric unit for land area, is equal to one square hectometre (hm). </P>

What does hm stand for in the metric system