What is "hemagglutination"

n. The agglutination of red blood cells, especially as a test for the presence of antibody

n. agglutination of red blood cells [syn: haemagglutination]

Hemagglutination, or haemagglutination, is a specific form of agglutination that involves red blood cells (RBCs). It has two common uses in the laboratory: blood typing and the quantification of virus dilutions in a Haemagglutination assay.