Definition of protocol

• n. - The original copy of any writing, as of a deed, treaty, dispatch, or other instrument.
• n. - The minutes, or rough draught, of an instrument or transaction.
• n. - A preliminary document upon the basis of which negotiations are carried on.
• n. - A convention not formally ratified.
• n. - An agreement of diplomatists indicating the results reached by them at a particular stage of a negotiation.
• v. t. - To make a protocol of.
• v. i. - To make or write protocols, or first draughts; to issue protocols.