WordNet (r) 3.0 (2006):

histiocytic leukaemia
    n 1: leukemia characterized by the proliferation of monocytes
         and monoblasts in the blood [syn: monocytic leukemia,
         monocytic leukaemia, monoblastic leukemia, monoblastic
         leukaemia, histiocytic leukemia, histiocytic
         leukaemia]