(history) The widespread transfer of animals, plants, culture, human populations, communicable diseases, technology and ideas between the American and Afro-Eurasian hemispheres in the 15th and 16th centuries, related to European colonization and trade after Christopher Columbus' 1492 voyage.

plural of exam paper

plural of exact science

exchange rate

(programming) An exception that is not declared in the signature of a method, but results in an abort with a stack trace.

An editor who inspects, and culls from, periodicals, or exchanges, for his or her own publication.

plural of foreign exchange certificate

(finance) A surrogate currency often used as a tool to control circulation of foreign exchange in countries where the national currency is subject to exchange controls or is not convertible. The certificates may be denominated in local or foreign currency, depending on the exact purpose of the regulation.

to show the way or demonstrate a technique to individuals or a group by going ahead or doing something before the others

(informal) A self-examination.