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English definition of “protocol”

protocol

noun  /ˈproʊt̬·əˌkɔl, -ˌkɑl/ us  

protocol noun (RULES)

[C/U] the formal system of rules for correct behavior on official occasions: [U] According to protocol, the new ambassador will present his credentials to the president. science [C/U] A protocol is also the rules to be followed when doing a scientific study or an exact method for giving medical treatment: [U] medical protocol [C] a treatment protocol

protocol noun (AGREEMENT)

[C] a formal international agreement
(Definition of protocol from the Cambridge Academic Content Dictionary © Cambridge University Press)
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