Thread:DiggerZombie1/@comment-22439-20161006224056/@comment-29100142-20161006235536

"Pure" means that the pokemon only has that type. A pokemon is not "pure" when it has 2 types. For example: Haxorus is a "pure" dragon type because it is only dragon. Rayquaza is a Dragon AND Flying which does not make it a "pure" dragon type since it has two types.