haematoblast noun3 •Either of two categories of blood cell. •(no longer used) A platelet. •(no longer used) Any of the precursor cells in hematopoiesis that precede the mature blood cells, sometimes specifically those that lead to a mature red blood cell (e.g., hematopoietic stem cell, CFU-GEMM, CFU-E, NRBC, proerythroblast, erythroblast). formshaematoblasts
