1. The formation and development of blood cells, especially red blood cells, in the bone marrow and other blood-forming tissues.
Usage: Also spelled hematopoiesis (U.S. variant); Medical/scientific term; Chiefly British spelling with 'ae'

Examples

• Haemopoiesis occurs primarily in the red bone marrow of adults.
• The patient's haemopoiesis was disrupted by the chemotherapy treatment.
• Doctors monitor haemopoiesis to ensure the body is producing adequate blood cells.
• Certain vitamins are essential for normal haemopoiesis.
• The spleen can support haemopoiesis when bone marrow function is compromised.