kombucha Syllabification: (kom·bu·cha)Pronunciation: /kômˈbo͞oCHə/Entry from US DictionaryDefinition of kombucha noun a food supplement prepared from a symbiotic colony of yeast and bacteria that is added to tea for its alleged health benefits. Origin:Japanese, 'tea sponge'kombucha in other Oxford dictionaries Definition of kombucha in the US English dictionary