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di·phen·oxy·late | \ ˌdī-ˌfen-ˈäk-sə-ˌlāt 
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\Medical Definition of diphenoxylate
: an antidiarrheal agent chemically related to meperidine and administered in the form of its hydrochloride C30H32N2O2·HCl in combination with the sulfate of atropine — see lomotil
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