saccharinEnglishOxford Dictionary of Englishsaccharin /ˈsak(ə)rɪn , ˈsakəriːn / ▸ noun [mass noun] a sweet-tasting synthetic compound used in food and drink as a substitute for sugar. Alternative name: o-sulphobenzoic imide; chemical formula: C7H5NO3S. – ORIGIN late 19th century: from modern Latin saccharum ‘sugar’ + -in1.