Rh

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. 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 (Freq. 2)
• Syn:
rhesus factor, Rh factor
• Hypernyms:
antigen
2. a white hard metallic element that is one of the platinum group and is found in platinum ores;
used in alloys with platinum
• Syn:
rhodium, atomic number 45
• Hypernyms:
metallic element, metal