active immunity: a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens
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
cuneate leaf: a wedge-shaped leaf having the acute angle at the base