(cryptography) An exchange of peers' keys at the initialization phase of connection.

A building that trades stocks in of companies for money and vice versa. / An organisation that trades stocks in of companies for money and vice versa.

any equipment that establishes connections between telephones / the rooms housing such equipment

(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

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

(economics, finance) The rate at which one currency can be exchanged for another, usually expressed as the value of the one in terms of the other.

(physics) Any device (such as a radiator) that transfers heat from one fluid to another via a separating wall.

plural of stock exchange

A medium of exchange.

An intermediary used in trade to avoid the inconveniences of a pure barter system, such as money.