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Adjective: rh-negative
  1. Of persons (or their blood) lacking the Rh factor present in their red blood cells
Noun: Rh negative
  1. The blood group whose red cells lack the Rh factor (Rh antigen)
    - Rh-negative blood type, Rh-negative blood

Type of: blood group, blood type

Antonym: rh-positive

Encyclopedia: Rh negative