noun
red blood cell; erythrocyte
Medical and biological term for the oxygen-carrying cells in blood. The more technical term is 赤血球, while 赤血球 is the common term.
赤血球は酸素を運ぶ役割をしている。
Red blood cells carry oxygen.
血液検査で赤血球の数
The blood test showed a low red blood cell count.