Therapeia
Therapeia is a Greek term (from θεραπεία, therapeia) meaning service, care, healing, or treatment. It derives from the verb θεραπεύω (therapeuo), “to attend to, serve, heal,” and is the linguistic ancestor of the English words therapy and therapeutics. In ancient Greek medicine, therapiea referred to the practice and methods used to cure disease and restore health, distinguishing the therapeutic arts from diagnosis or prognosis.
Beyond medicine, therapeia also carried a broader sense of service or care in religious and philosophical contexts.
In modern usage, therapeia forms the basis of the English terms therapy and therapeutics. It encompasses the