abrogation (n.) Look up abrogation at Dictionary.com
"annulling of (a law) by legislative action," 1530s, from Latin abrogationem (nominative abrogatio) "a repeal (of a law)," noun of action from past participle stem of abrogare "annul, repeal," from ab- "away" (see ab-) + rogare "propose (a law), ask, request" (see rogation).