noradrenaline Syllabification: (nor·a·dren·a·line)Pronunciation: /ˌnôrəˈdrenəlin/ (also noradrenalin)Definition of noradrenaline noun another term for norepinephrine.Origin: 1930s: from nor- + adrenalinenoradrenaline in other Oxford dictionaries Definition of noradrenaline in the British & World English dictionary