1. The state of the organism when it functions optimally without evidence of disease or abnormality.
2. A state of dynamic balance in which an individual's or a group's capacity to cope with all the circumstances of living is at an optimal level.
3. A state characterized by anatomic, physiologic, and psychological integrity, ability to perform personally valued family, work, and community roles; ability to deal with physical, biologic, psychological, and social stress; a feeling of well-being, and freedom from the risk of disease and untimely death.
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