microdensitometer Syllabification: (mi·cro·den·si·tom·e·ter)Pronunciation: /ˌmīkrōˌdensəˈtämətər/Definition of microdensitometer noun a densitometer for measuring the density of very small areas of a photographic image. microdensitometer in other Oxford dictionaries Definition of microdensitometer in the British & World English dictionary