The process by which blood cells are produced and formed in the bone marrow.
From Greek 'haima' (blood) + 'poiesis' (making or production), literally 'blood-making.' Formalized as a medical term in the late 1800s.
Your bone marrow is performing haematopoiesis right now—creating about 2 million new blood cells every single second to replace the ones your body uses up, which is why bone marrow transplants are so valuable for treating blood diseases.
Complete word intelligence in one call. Free tier — 50 lookups/day.