From Longman Dictionary of Contemporary Englishdeltadel‧ta /ˈdeltə/ noun [countable] 1 SLAthe fourth letter of the Greek alphabet2 SGan area of low land where a river spreads into many smaller rivers near the sea the Nile delta
Examples from the Corpus
delta• From these we get our word alphabet, delta, and gamma which gives us gamma rays.• They are called delta frames and, typically, may consist of no more than 5 kilobytes of data.• They change the angle of attack from acute within the central delta, to near neutral over the outer triangular sail panel.• Tom Pratt's stack of four deltas lofts his Pentax unit.• the Mississippi delta• He too migrated to Cairo to find a job, in his case from a village in the Nile delta.• Left: Typical of the rigid frame using glass fibre tubing on the earlier steerable deltas is seen on this example.• This allows him to supervise all the family's vast landholdings in the delta.From Longman Business Dictionarydeltadel‧ta /ˈdeltə/ noun [countable usually singular]1STATISTICS a change in an amount2FINANCE the relationship between a change in price of an option (=right to buy or sell shares etc) to the change in price of the underlying assetOrigin delta (1300-1400) Greek from a Semitic language 