1. rate of exchange the charge for exchanging currency of one country for currency of another
  2. bill of exchange a document ordering the payment of money
  3. medium of exchange anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region
  4. stock exchange an exchange where security trading is conducted by professional stockbrokers
  5. advocate a person who pleads for a person, cause, or idea
  6. foreign exchange the system by which one currency is exchanged for another
  7. refocusing focusing again
  8. futures exchange a commodity exchange where futures contracts are traded
  9. telephone exchange a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
  10. ratification making something valid by formally confirming it
  11. reflex angle an angle greater than 180 degrees (but less than 360)
  12. ion exchange a process in which ions are exchanged between a solution and an insoluble (usually resinous) solid; widely used in industrial processing
  13. price-fixing control of the price of a commodity in interstate commerce
  14. exchange the act of changing one thing for another thing
  15. autosexing (especially of domestic fowl) breeding to reveal differential sex characteristics at hatching
  16. bureau de change an establishment where you can exchange foreign money
  17. commodity exchange an exchange for buying and selling commodities for future delivery
  18. heat exchanger device that transfers heat from one liquid to another without allowing them to mix
  19. N. Y. Stock Exchange a stock exchange in New York
  20. relaxing affording physical or mental rest