The term CHILEAN EXPORT can be broken down into three crossword solutions: NITRATE (7 letters), NITER (5 letters), and NITRE (5 letters). NITRATE is a salt or ester of nitric acid, which is an important component of Chilean exports. Niter and NITRE are both archaic terms for the same substance, which is also known as sodium NITRATE. This mineral is used in fertilizers, explosives, and food preservatives, and is a major export of Chile.