myelofibrosis
/ˌmʌɪələ(ʊ)fʌɪˈbrəʊsɪs/Pathology
noun
Progressive fibrosis of the bone marrow, typically associated with pancytopenia and with myeloid metaplasia in other organs.
Origin
1930s; earliest use found in American Journal Pathology. From myelo- + fibrosis.