Today's Word of the Day means...
hemopoiesis he·mo·poi·e·sis (hē'mə-poi-ē'sĭs)
Variant of hematopoiesis.
continuous process by which the cellular constituents of blood are replenished as needed. Blood cells are divided into three groups: the red blood cells (erythrocytes), the white blood cells (leukocytes), and the blood platelets (thrombocytes). The white blood cells are subdivided into three broad groups: granulocytes, lymphocytes, and monocytes.