What does phase mean in Breaking Dawn?

The word "phase" in the context of the Breaking Dawn series refers to the transformation process of a vampire when being created or resurrected. Phase one typically involves a burning sensation and a transformation that lasts for several minutes. Phase two is the time of maximum pain, and may last up to a day. Phase three involves the body slowly adjusting and becoming stronger, and may last for several weeks. When a vampire experiences phase four, they are now capable of survival and adaptation.