Ma'anar ƙamus na "RH negative" yana nufin nau'in jinin mutum. Musamman, yana nufin cewa mutum ba shi da furotin Rhesus factor (Rh factor) a saman jajayen ƙwayoyin jininsu. Mutanen da ke Rh-negative suna iya karɓar jini kawai daga wasu masu ba da gudummawar Rh marasa kyau, yayin da mutanen da ke da Rh tabbatacce za su iya karɓar jini daga Rh positive da Rh negative donors. Rh factor ana kiransa sunan biri Rhesus, inda aka fara gano furotin.