Meaning

noun a medicine or therapy that cures disease or relieve pain

adjective tending to cure or restore to health

adjective relating to or involved in therapy

originFrom Middle English terapeucia, from New Latin therapeuticus (“curing, healing”), from Ancient Greek θεραπευτικός (therapeutikós, “attentive, helpful, obliging, curative”), from θεραπευτής (therapeutḗs, “one who waits on another, an attendant”), from θεραπεύω (therapeúō, “I wait on, attend, serve, cure”).

Etymology from Wiktionary, CC BY-SA 3.0