Definition of myeloblastosis in US English:

myeloblastosis

noun

Medicine
  • Excessive proliferation of myeloblasts, resulting in their presence in the peripheral blood or tissues other than the bone marrow; specifically (more fully "avian myeloblastosis") a form of avian leukosis characterized by myeloblastic leukaemia.

Origin

1930s. From myeloblast + -osis. Compare slightly earlier erythroblastosis.

Pronunciation

myeloblastosis

/ˌmʌɪələ(ʊ)blaˈstəʊsɪs/