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English definition of “protocol”

protocol

noun
 
 
/ˈprəʊtəkɒl/
[C] POLITICS a formal international agreement between governments relating to a particular activity: Trade relations between the European Union's recent members are governed by a strict protocol. the Kyoto protocol
[C] IT a set of technical rules that control the exchange of information between different computers or computer networks: Companies that use a competitor's protocols in their products will pay 0.4% of their revenue to that company. Each computer's Web connection has a unique internet protocol address.
[C or U] the system of rules and acceptable behaviour that people or organizations should follow in official situations, for example when they have formal discussions: After last week's incident, officials in charge of airport security have been ordered to review safety regulations and protocol. For a junior officer to communicate such important information directly to a senior officer in this way is considered a breach of protocol.protocol for sth What is the protocol for handling complaints?
(Definition of protocol from the Cambridge Business English Dictionary © Cambridge University Press)
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