blood cell, blood corpuscle, corpuscle - either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets

macrocyte, megalocyte - abnormally large red blood cell (associated with pernicious anemia)

megaloblast - abnormally large red blood cell present in pernicious anemia and folic acid deficiency

acanthocyte - an abnormal red blood cell that has thorny projections of protoplasm

microcyte - an abnormally small red blood cell (less than 5 microns in diameter)

reticulocyte - an immature red blood cell containing a network of filaments or granules

sickle cell - an abnormal red blood cell that has a crescent shape and an abnormal form of hemoglobin

siderocyte - an abnormal red blood cell containing granules of iron not bound in hemoglobin

spherocyte - an abnormal spherical red blood cell

target cell - an abnormal red blood cell with a ringed appearance; associated with anemia

haemoglobin, Hb, hemoglobin - a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues; "fish have simpler hemoglobin than mammals"