| myelocytic leukemia | (n) a malignant neoplasm of blood-forming tissues; marked by proliferation of myelocytes and their presence in the blood, Syn. granulocytic leukemia |
| acute myelocytic leukemia | (n) acute leukemia characterized by proliferation of granular leukocytes; most common in adolescents and young adults, Syn. acute myeloid leukemia |
| chronic myelocytic leukemia | (n) chronic leukemia characterized by granular leukocytes; more common in older people, Syn. myeloid leukemia |