(analytical chemistry) A technique that uses ion exchange to separate compounds, anions and cations according to their electrical properties.

(chemistry) the reversible process whereby ions are exchanged between a solution and a solid or gel; cation exchange is the process used in a water softener

present participle of exchange

(telecommunications) A telecommunications switching system, physically located at a customer's place of business, that provides internal communication between users and also access to outside (trunk) telephone lines.

(Britain) The government department that collects and manages revenue.

A treasury. / An available fund of money, especially one for a specific purpose.

(transitive) To proceed against (a person) in the Court of Exchequer.

plural of exchequer

plural of exchange

The exchange of currency from one country for currency from another country. / Foreign currency.