micrite Syllabification: (mi·crite)Pronunciation: /ˈmikˌrīt, ˈmīˌkrīt/Definition of micrite noun Geology microcrystalline calcite present in some types of limestone. limestone consisting chiefly of this. Derivatives micriticPronunciation: /miˈkritik, mī-/ adjective Origin: 1950s: from micr(ocrystalline) + -ite1micrite in other Oxford dictionaries Definition of micrite in the British & World English dictionary