definition of
exchange

[1] #1 exchange n. chemical process in which one atom or ion or group changes places with another. wn

[2] #2 exchange v. [change, interchange] give to, and receive from, one another; "Would you change places with me?"; "We have been exchanging letters for a year". wn

[3] #3 exchange n. a mutual expression of views (especially an unpleasant one); "they had a bitter exchange". wn

[4] #4 exchange n. [interchange] the act of changing one thing for another thing; "Adam was promised immortality in exchange for his disobedience"; "there was an interchange of prisoners". wn

[5] #5 exchange n. the act of giving something in return for something received; "deductible losses on sales or exchanges of property are allowable". wn