From:
http://forum.square-enix.com/ffxiv/t...JP-4gamer-site
Dear YoshiP,
I know I'm nitpicking, but it's really frustrating that you're misusing this word. You reference WoW, which is a good thing since a lot of people learned the term overthere, but your explanation is incorrect...
In WoW a
raid is formed when the
size of one party is not enough. When you switch to raid style, you're able to bind up to 8 parties together. Making it possible for up to 5x8= 40 people to play together.
The properties of a raid are also different from a normal party. In a raid, you are unable to complete objectives of standard quests and minitargets of all raidparties, with their members, will become available. Plus /raid chatting (similar to /party) is enabled to cover all the parties.
In WoW "raids" are associated with large-scale PvE (and also large-scale PvP), because you start using raids for content that's designed for a minimum of 10 players.
The term you should be using for content that's instanced and requires strategy is "dungeon" or just plain "instance". A dungeon for a regular party is
never called a raid in WoW.
A "raid dungeon" in FFXIV would be a dungeon for large-scale PvE content: 16+ players (atleast 2 parties bound together)
I hope this post is clear enough to show the proper use of the words "raid" and "dungeon"/"instance".