The word "protocol" refers to a set of rules, guidelines, or procedures that dictate how certain tasks should be carried out or how individuals should interact in various situations. Protocols are important in fields such as medicine, technology, diplomacy, and computer networking, as they ensure that actions are consistent, efficient, and safe.
The term "protocol" comes from the Greek word "protokollon," which means "first glue." It originally referred to a piece of paper that was glued to the front of a manuscript, summarizing its contents. Over time, it evolved to mean a formal set of instructions or rules for conduct.