WordDictionary

Noun:

• A rule, guideline, or document which guides how an activity should be performed.
• computing A set of formal rules describing how to transmit data, especially across a network. A message syntax or electrical specification and a description 2 or more communication nodes: finite state machines, the transition functions of which take messages or times as input and, when then so triggered, may themselves send messages.
• diplomacy A convention not formally ratified.
• diplomacy An agreement of diplomatists indicating the results reached by them at a particular stage of a negotiation.
• diplomacy A preliminary document upon the basis of which negotiations are carried on.
• The minutes, or rough draft, of an instrument or transaction.
• The original copy of any writing, as of a deed, treaty, dispatch, or other instrument.

Verb:

• obsolete, intransitive: To make or write protocols, or first drafts; to issue protocols.
• obsolete, transitive: To make a protocol of.