Pronunciation: (et'i-kit, -ket"), [key]
1. conventional requirements as to social behavior; proprieties of conduct as established in any class or community or for any occasion.
2. a prescribed or accepted code of usage in matters of ceremony, as at a court or in official or other formal observances.
3. the code of ethical behavior regarding professional practice or action among the members of a profession in their dealings with each other: medical etiquette.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.