contango
Concise Oxford English Dictionary © 2008 Oxford University Press:
contango /kənˈtaŋgəʊ/
▶noun Brit. Stock Exchange the normal situation in which the spot or cash price of a commodity is lower than the forward price.
■ historical a percentage paid by a buyer of stock to postpone transfer to a future settling day.
– origin C19: prob. an arbitrary formation on the pattern of Latin verbs ending in -o in the first person sing., perh. with the idea ‘I make contingent’ (see contingent).
'contango' also found in these Oxford entries:

