| 释义 | 
		nal·trex·one \nalˈtrekˌsōn\ noun (-s) Etymology: N-allyl + -trex- (as in methotrexate) + -one  : a synthetic opiate antagonist C20H23NO4 that is administered in the form of its hydrochloride especially to maintain detoxified opiate addicts in a drug-free state |