sourcesouth sourness (English) [ IPA: sourness ASM: চউৰনেচ]Contributed by: Dr. Neelotpal Deka, LL.M. (IT & IP Law, UK) on 2007-08-10 1. Chemistry(Abstract Noun) The quality or test of being acid English: acidity, sourness, tartness, Assamese: অম্লতা, Garo: mesengani, Dimasa: brabbah, kiribah, mikri