cancer, malignant neoplastic disease - any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream

acute leukemia - rapidly progressing leukemia

chronic leukemia - slowly progressing leukemia

lymphocytic leukemia - leukemia characterized by enlargement of lymphoid tissues and lymphocytic cells in the circulating blood

histiocytic leukaemia, histiocytic leukemia, monoblastic leukemia, monoblstic leukaemia, monocytic leukaemia, monocytic leukemia - leukemia characterized by the proliferation of monocytes and monoblasts in the blood

myeloblastic leukemia - a malignant neoplasm of blood-forming tissues; characterized by numerous myeloblasts in the blood stream

granulocytic leukemia, myelocytic leukemia - a malignant neoplasm of blood-forming tissues; marked by proliferation of myelocytes and their presence in the blood