active immunity

/ˌæktɪv ɪˌmjunədi/

Definitions of active immunity

1. noun

   a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens
   type of:

   acquired immunity

   immunity to a particular disease that is not innate but has been acquired during life; immunity can be acquired by the development of antibodies after an attack of an infectious disease or by a pregnant mother passing antibodies through the placenta to a fetus or by vaccination