Main Entry: leu·ko·pe·nia

Variant(s): or chiefly British leu·co·pe·nia \ˌlü-kō-ˈpē-nē-ə\

Function: noun

: a condition in which the number of white blood cells circulating in the blood is abnormally low and which is most commonly due to a decreased production of new cells in conjunction with various infectious diseases, as a reaction to various drugs or other chemicals, or in response to irradiation

—leu·ko·pe·nic or chiefly British leu·co·pe·nic \-ˈpē-nik\ adjective