Also found in: Dictionary, Thesaurus, Encyclopedia.
anti-Rh agglutinin(1) Anti-Rh antibody.
(2) A nonspecific term for any anti-Rh system antibody, most often referring to anti-RhD and anti-RhDu antibodies.
An antibody produced by people with Rh-negative blood who are exposed to blood containing the Rh antigen. This antibody develops in Rh-negative people who receive Rh-positive blood and in Rh-negative women carrying an Rh-positive fetus. The antibody may cause hemolytic disease of the newborn in subsequent Rh-positive pregnancies.
See also: agglutinin