decametre
Concise Oxford English Dictionary © 2008 Oxford University Press:
decametre /ˈdekəmiːtə(r)/ (US decameter, dekameter) (abbrev.: dam; US also dkm)
▶noun a metric unit of length, equal to 10 metres.
– derivatives
decametric adjective.
decametric adjective.
'decametre' also found in these Oxford entries:

