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1. Dictionary

   Pro·to·col

   /ˈprōdəˌkôl/

   

   noun

   • 1. the official procedure or system of rules governing affairs of state or diplomatic occasions: "protocol forbids the prince from making any public statement in his defense"
   • ▪ the accepted or established code of procedure or behavior in any group, organization, or situation: "what is the protocol at a conference if one's neighbor dozes off during the speeches?" Similar etiquetteconventionsformalitiescustomsrules of conductprocedureritualcode of behavioraccepted behaviorconventionalitiesproprietyproprietiesone's Ps and Qsdecorummannerscourtesiescivilitiesgood formthe done thingthe thing to dopunctiliopolitesse
   • 2. the original draft of a diplomatic document, especially of the terms of a treaty agreed to in conference and signed by the parties: "signatories to the Montreal Protocol" Similar agreementtreatyententeconcordconcordatconventiondealpactcontractcompactsettlementarrangementarmisticetrucerare:engagement
   • ▪ an amendment or addition to a treaty or convention: "a protocol to the treaty allowed for this Danish referendum"
   • 3. a formal or official record of scientific experimental observations: "protocols of published cases frequently lack this vital information"
   • ▪ a procedure for carrying out a scientific experiment or a course of medical treatment: "a study protocol approved by the ethics committee of the hospital"
   • 4. a set of rules governing the exchange or transmission of data between devices.

   Word Origin late Middle English (denoting the original minute of an agreement, forming the legal authority for future dealings relating to it): from Old French prothocole, via medieval Latin from Greek prōtokollon ‘first page, flyleaf’, from prōtos ‘first’ + kolla ‘glue’. Sense 1 derives from French protocole, the collection of set forms of etiquette to be observed by the French head of state, and the name of the government department responsible for this (in the 19th century).

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2. dictionary.cambridge.org › us › dictionaryPROTOCOL | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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   the system of rules and acceptable behavior used at official ceremonies and occasions: a breach of Royal protocol. diplomatic protocol. [ C or U ] a rule or set of rules for a scientific or medical process: All data were collected according to protocols approved by the ethics committee.

3. www.vocabulary.com › dictionary › protocolProtocol - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › protocol

   Protocol is most often used when talking about the rules of government or official agencies. It is derived from the French and refers to the correct rules of etiquette for diplomats. The term protocol is used in many areas besides diplomatic ones.

4. www.collinsdictionary.com › dictionary › englishPROTOCOL definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   1 day ago · A protocol is a set of rules for exchanging information between computers. [computing] 3. countable noun. A protocol is a written record of a treaty or agreement that has been made by two or more countries.

5. www.britannica.com › dictionary › protocolProtocol Definition & Meaning | Britannica Dictionary

   www.britannica.com › dictionary › protocol

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   PROTOCOL meaning: 1 : a system of rules that explain the correct conduct and procedures to be followed in formal situations; 2 : a plan for a scientific experiment or for medical treatment.

6. dictionary.cambridge.org › dictionary › learner-englishPROTOCOL | meaning - Cambridge Learner's Dictionary

   dictionary.cambridge.org › dictionary › learner-english

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   PROTOCOL definition: the rules about what you must do and how you must behave in official or very formal situations: . Learn more.

7. www.yourdictionary.com › protocolProtocol Definition & Meaning | YourDictionary

   www.yourdictionary.com › protocol

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   Protocol Definition. prōtə-kôl, -kōl, -kŏl. protocoled, protocoling, protocolled, protocolling, protocols. Meanings. Synonyms. Sentences. Definition Source. Word Forms. Origin. Noun. Verb. Filter. noun. protocols. A diplomatic agreement, esp. one that amends, clarifies, or adds to a treaty. Webster's New World. A code of correct conduct.

8. www.oxfordlearnersdictionaries.com › definition › englishprotocol noun - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › definition › english

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   Definition of protocol noun from the Oxford Advanced Learner's Dictionary. protocol. noun. OPAL W. /ˈprəʊtəkɒl/ /ˈprəʊtəkɑːl/ [uncountable] a system of fixed rules and formal behaviour used at official meetings, usually between governments. a breach of protocol. the protocol of diplomatic visits. Want to learn more?