Source : Webster's Revised Unabridged Dictionary (1913)

Leukaemia \Leu*k[ae]"mi*a\ (l[-u]*k[=e]"m[i^]*[.a]), n.
   Leucocyth[ae]mia.

Source : WordNet®

leukaemia
     n : malignant neoplasm of blood-forming tissues; characterized
         by abnormal proliferation of leukocytes; one of the four
         major types of cancer [syn: {leukemia}, {leucaemia}, {cancer
         of the blood}]