The presence of unusually large numbers of myeloblasts in the circulating blood, or tissues, or both (as in acute leukaemia). ... (05 Mar 2000) ... 
(mi″ә-lo-blas-to´sis) excess of myeloblasts in the blood, as seen in myeloblastic leukemia.
Type: Term Pronunciation: mī′ĕ-lō-blas-tō′sis Definitions: 1. The presence of unusually large numbers of myeloblasts in the circulating blood, or tissues, or both (as in acute leukemia).