<p><strong>Adjective</strong></p><ul><li>protected from a disease or the like, as by inoculation or by having the necessary antibodies due to a previous infection</li><li>often followed by <em>to</em>: Most adults in the study were immune to yellow fever due to previous vaccination.</li><li>Since I had already had measles, I assumed I was immune.</li><li>of or relating to the production of antibodies or lymphocytes that can react with a specific antigen: Crohn's disease is an abnormal immune reaction that causes the immune system to attack cells in the lining of the digestive tract.</li><li>exempt or protected: He thought being rich made him immune from punishment, but he went to jail for his crimes.</li><li>not responsive or susceptible: Over time, writers are supposed to grow immune to criticism and let bad reviews roll off our backs.</li><li>You're certainly highly resistant to argument, and also immune to new ideas.</li></ul><p><strong>Noun</strong></p><ul><li>a person who is immune.</li></ul>