myelosuppression
/ˌmʌɪələ(ʊ)səˈprɛʃn/Medicine
noun
Inhibition of the normal activity of the bone marrow (reduced haematopoiesis), usually as a result of cytotoxic chemotherapy or radiotherapy.
Origin
1960s; earliest use found in Annals of Internal Medicine. From myelo- + suppression.