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Protocol is part of the Academic Word List. It is important for students in college and university.
- (countable) A protocol is a rule, guideline, or document about how certain activities are done.
- I don't know the protocol for talking to the President.
- (countable) A protocol is a set of rules that describes how data is transmitted.
- To get the domain name from the domain name server, the other computer has to send the right protocol.