electroimmunodiffusion e·lec·tro·im·mu·no·dif·fu·sion (ĭ-lěk'trō-ĭm'yə-nō-dĭ-fy&oomacr;'zhən, -ĭ-my&oomacr;'-)
n.
An immunochemical method that combines electrophoretic separation with immunodiffusion by incorporating antibody into the support medium.