microflora Syllabification: (mi·cro·flo·ra)Pronunciation: /ˌmīkrōˈflôrə/Definition of microflora noun (plural microfloras or microflorae /-ˈflôrē/) Biology bacteria and microscopic algae and fungi, especially those living in a particular site or habitat. Derivatives microfloral adjective microflora in other Oxford dictionaries Definition of microflora in the British & World English dictionary