saccharinePronunciation: /ˈsakərʌɪn, -ɪn, -iːn/Definition of saccharine noun another term for saccharin. adjective 1excessively sweet or sentimental:saccharine music 2 dated relating to or containing sugar; sugary. Origin: late 17th century: from modern Latin saccharum + -ine1saccharine in other Oxford dictionaries Definition of saccharine in the US English dictionary