Definition of abrogate
2 formal : to treat as nonexistent : to fail to do what is required by (something, such as a responsibility) The company's directors are accused of abrogating their responsibilities.
3 formal : to suppress or prevent (a biological function or process and especially an immune response) Continued progress in measurement and characterization of antibodies and strategies to abrogate antibody production both prior to and following heart transplant have been encouraging.— Peter M Eckman
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