ETIQUETTE, a term for ceremonial usage, the rules of be haviour observed in society, more particularly the formal rules of ceremony to be observed at court functions, etc.; the procedure, especially with regard to precedence and promotions in an organ ized body or society. Professions, such as the law or medicine, observe a code of etiquette, which the members must respect as protecting the dignity of the profession and preventing injury to its members. (See BUSINESS CODES.) The O.Fr. estiquette or estiquet meant a label, or "ticket," a meaning retained by the mod. Fr. etiquette. The ultimate origin is Teutonic, from sticken, to post up, stick, affix. For a summary guide to the various forms of social address, see FORMS OF ADDRESS.