myeloblast
/ˈmʌɪələ(ʊ)blɑːst/ /ˈmʌɪələ(ʊ)blast/Histology
noun
A primitive precursor of a white blood cell, normally confined to the bone marrow; specifically the earliest recognizable precursor of the granulocytic series, maturing into a promyelocyte.
Origin
Early 20th century; earliest use found in Frank Foster (1841–1911). From myelo- + -blast, after German Myeloblast.