Rh因子あーるえっちいんしアールエッチいんしMeanings1nounRh factor; Rhesus factormedicineMedical term for the Rh blood group antigen. Used in contexts such as blood typing and pregnancy.Rh因いん子しは血けつ液えき型がたの分ぶん類るいに使つかわれる。The Rh factor is used in blood type classification.妊にん娠しん中