• n. 协议；草案；礼仪
• vt. 拟定
• vi. 拟定

proto-,原始的，最早的，-col,胶，词源同glue,collagen.即最早粘上去的，引申词义协议，草案，后引申词义官方文件，特别用于指政府外交部的官方文件，外交礼仪，后词义通俗化。

protocol

protocol: [16] Protocol originally denoted an ‘official record of a transaction’. Not until the end of the 19th century, as a reborrowing from French, did it come to be used for ‘rules of etiquette’ (the semantic link is an intermediate sense ‘draft of a treaty or other diplomatic document’, which led to its use in French for the ‘department in charge of diplomatic etiquette’). It goes back via Old French prothocole and medieval Latin prōtocollum to Greek prōtókollon, a compound formed from prótos ‘first’ and kólla ‘glue’ which meant ‘flyleaf glued to the front of a book giving a list of its contents’.
=> colloid

protocol (n.)

1540s, as prothogall "draft of a document," from Middle French prothocole (c. 1200, Modern French protocole), from Medieval Latin protocollum "draft," literally "the first sheet of a volume" (on which contents and errata were written), from Greek protokollon "first sheet glued onto a manuscript," from protos "first" (see proto-) + kolla "glue."

Sense developed in Medieval Latin and French from "official account" to "official record of a transaction," to "diplomatic document," and finally, in French, to "formula of diplomatic etiquette." Meaning "diplomatic rules of etiquette" in English first recorded 1896, from French; general sense of "conventional proper conduct" is from 1952. "Protocols of the (Learned) Elders of Zion," Russian anti-Semitic forgery purporting to reveal Jewish plan for world domination, first published in English 1920 under title "The Jewish Peril."

1. According to protocol, he first reported to the Director of the hospital.

根据礼节，他先向医院院长报到。

来自柯林斯例句

2. a breach of protocol

违反外交礼节

来自《权威词典》

3. Were the seating arrangements for the dinner party according to protocol?

餐会的坐位安排是根据礼节的需要 吗 ?

来自《现代汉英综合大词典》

4. We must observe the correct protocol.

我们必须遵守应有的礼仪.

来自《简明英汉词典》

5. The statesmen signed a protocol.

那些政治家签了议定书.

来自《简明英汉词典》