Rh, n.
a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum
<noun.substance>
Rh atomic number 45 rhodium
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hypernym
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
<noun.substance>
Rh Rh factor rhesus factor
semantic pointers
hypernym