1. According to Dr. Elisabeth Kübler-Ross, the fifth and final stage of dying. Individuals who reach this stage (not all do) come to terms with impending death and await the end with quiet expectation.
2. In organ transplantation, the harmonious integration of grafted tissue into the body of the transplant recipient.
3. Approval or acquiescence (e.g., of a recommended treatment or a functional impairment produced by an illness).