Medical Definition of purge
transitive verb: to cause evacuation from (as the bowels) or of or from the bowels of <drugs that purge the bowels> <purged the patient with a cathartic>
2: to free (itself) of suspended matter usually by sedimentation—used of a liquid
intransitive verb: to become purged
2: to have or produce frequent evacuations
3: to cause purgation
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