English noun: Rh factor | |||
| 1. | Rh factor (substance) a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia | ||
| Synonyms | Rh, rhesus factor | ||
| Broader (hypernym) | antigen | ||