A solemn declaration of opinion, commonly against some act; appropriately, a formal and solemn declaration in writing of dissent from the proceedings of a legislative body; as the protest of lords in parliament, or a like declaration of dissent of any minority against the proceedings of a majority of a body of men.

1. In commerce, a formal declaration made by a notary public, under hand and seal, at the request of the payee or holder of a bill of exchange, for non-acceptance or non-payment of the same, protesting against the drawer and others concerned, for the exchange, charges, damages and interest. This protest is written on a copy of the bill, and notice given to the indorser of the same, by which he becomes liable to pay the amount of the bill, with charges, damages and interest; also, a like declaration against the drawer of a note of hand for non-payment to a banking corporation, and of the master of a vessel against seizure, etc. A protest is also a writing attested by a justice of the peace or consul, drawn by the master of a vessel, stating the severity of the voyage by which the ship has suffered, and showing that the damage suffered was not owing to the neglect or misconduct of the master.