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protocol

PROH-tuh-kol /ˈproʊtəkɒl/

nounB2TOEFLIELTSGRE

DiplomaticTechnicalFormal

The official system of rules and acceptable behavior governing diplomatic or administrative procedures; an established step-by-step procedure.

Protocol emphasizes strict adherence to correct, standardized procedures in formal diplomatic, medical, or technological operations.

The story behind the word. In ancient Greece, a 'protokollon' was the first sheet glued onto a manuscript scroll, containing the document's official summary, date, and authentication mark. As official state documents grew in importance, the word evolved to describe diplomatic drafts, state etiquette, and standardized network rules.

Word relationships

procedure: 'Procedure' is a general sequence of actions, whereas 'protocol' implies an officially mandated, standardized rulebook.
etiquette: 'Etiquette' focuses on social politeness, whereas 'protocol' covers formal operational rules and official hierarchy regulations.

improvisation: 'Improvisation' is making decisions spontaneously without following established rules.

Commonly confused with

prototype: 'Prototype' is an early preliminary model of an invention; 'protocol' is a formal set of procedural rules.

Word family

protocolize (verb): To establish official protocols for a process.

Collocations

strict protocol
follow protocol
safety protocol
diplomatic protocol

Idioms & expressions

by the book
standing operating procedure

Example sentences

"Diplomatic protocol demands that foreign ambassadors be greeted according to strict standards of official precedence." Diplomatic and official etiquette
"During a system breach, safety managers must strictly execute the emergency containment protocol." Emergency workplace procedures

Memory hook

Protocol is glued (kolla) at the FRONT (protos) of every official procedure. The strict rules glued to a procedure.

When not to use

Do not use protocol to describe flexible, casual habits or spontaneous personal preferences.

Fun facts

In computer networking, HTTP and IP are 'protocols'—they act like diplomatic etiquette rules allowing computers from different manufacturers to speak without misinterpretation.