What is the immune system? The immune system is what protects your body from diseases and infections. It's the bodily system that produces the immune response to defend your body from …

the condition of being immune; the protection against infectious disease conferred either by the immune response generated by immunization or previous infection or by other nonimmunologic factors.

IMMUNITY definition: the state of being immune from or insusceptible to a particular disease or the like. See examples of immunity used in a sentence.

Definition of immunity noun from the Oxford Advanced Learner's Dictionary. [uncountable] the body’s ability to avoid or not be affected by infection and disease. immunity against something The vaccine …

In biology, immunity is the state of being insusceptible or resistant to a noxious agent or process, especially a pathogen or infectious disease. Immunity may occur naturally or be produced by prior …

IMMUNITY definition: 1. a situation in which you are protected against disease or from legal action: 2. a situation in…. Learn more.

4 meanings: 1. the ability of an organism to resist disease, either through the activities of specialized blood cells or....

IMMUNITY meaning: 1 : the power to keep yourself from being affected by a disease usually + to; 2 : special protection from what is required for most people by law usually + from

In medicine, the immune system’s way of protecting the body against an infectious disease. The three types of immunity are innate, adaptive, and passive.

Aug 26, 2025 · Immunity refers to the state of being resistant to a harmful agent, especially a pathogen or infectious disease. For many years, immunity was simply understood as the body’s resistance to …