exchange

/ɛksˈtʃeɪndʒ/

noun

1
An act of exchanging or trading.
“All in all, it was an even exchange.”
2
A place for conducting trading.
“The stock exchange is open for trading.”
3
A telephone exchange.
4
The fourth through sixth digits of a ten-digit phone number (the first three before the introduction of area codes).
“NPA-NXX-1234 is standard format, where NPA is the area code and NXX is the exchange.”
5
A conversation.
“After an exchange with the manager, we were no wiser.”
6
The loss of one piece and associated capture of another
7
The thing given or received in return; especially, a publication exchanged for another.
8
The transfer of substances or elements like gas, amino-acids, ions etc. sometimes through a surface like a membrane.
9
The difference between the values of money in different places.

1
To trade or barter.
“I'll gladly exchange my place for yours.”
2
To replace with, as a substitute.
“I'd like to exchange this shirt for one in a larger size.”

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