The definition of curative is something that heals.(adjective)
An example of curative is chicken soup that heals the common cold; curative soup.
See curative in Webster's New World College Dictionary
Origin: ME < OFr curatif < ML curativus < L curatus, pp. of curare, to take care of < cura: see cure
See curative in American Heritage Dictionary 4
Origin: Middle English, from Old French curatif, from Medieval Latin cūrātīvus, from Latin cūrātus, past participle of cūrāre, to cure, from cūra, care; see cure .
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