intravenousPronunciation: /ˌɪntrəˈviːnəs/ (abbreviation: IV)Translate intravenous | into French | into German | into Italian | into Spanish Definition of intravenous adjective existing or taking place within, or administered into, a vein or veins:an intravenous dripDerivatives intravenously adverb intravenous in other Oxford dictionaries Definition of intravenous in the US English dictionary