aleukocytosis
1aleukocytosis — Absence or great reduction (relative or absolute) of the number of white blood cells in the circulating blood ( i.e., an advanced degree of leukopenia), or the lack of leukocytes in an anatomical lesion. [G. a priv. + leukos, white …
2leukopenia — The antithesis of leukocytosis; any situation in which the total number of leukocytes in the circulating blood is less than normal, the lower limit of which is generally regarded as 4000–5000/mm3. SYN: leukocytopenia. [leuko(cyte) + G. penia,… …
