myelosuppression

Definition of myelosuppression
National Cancer Institute

myelosuppression

(MY-eh-loh-suh-PREH-shun)
A condition in which bone marrow activity is decreased, resulting in fewer red blood cells, white blood cells, and platelets. Myelosuppression is a side effect of some cancer treatments. When myelosuppression is severe, it is called myeloablation.

Source: NCI Dictionary of Cancer Terms