parenteralPronunciation: /pəˈrɛnt(ə)r(ə)l/Definition of parenteral adjective Medicine administered or occurring elsewhere in the body than the mouth and alimentary canal:parenteral nutritionOften contrasted with enteral.Derivatives parenterally adverb Origin: early 20th century: from para-1 'beside' + Greek enteron 'intestine' + -alparenteral in other Oxford dictionaries Definition of parenteral in the US English dictionary