- red blood cell, RBC, erythrocyte - a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus
--1 is a kind of blood cell, blood corpuscle, corpuscle
--1 has substances: hemoglobin, haemoglobin, Hb
--1 has particulars:megalocyte, macrocyte; megaloblast; acanthocyte; microcyte; reticulocyte; sickle cell; siderocyte; spherocyte; target cell