antibody [antibodies]◼◼◼(protein that binds to a specific antigen) noun [UK: ˈæn.ti.ˌbɒ.di] [US: ˈæn.tə.ˌbɑː.di]A flu shot contains antibodies that fight the H1N1 virus. = Un vaccin contre la grippe contient des anticorps qui combattent le virus H1N1.