IPA: /ˌæb.rəˈɡeɪ.ʃən/
KK: /ˌæb.rəˈɡeɪ.ʃən/
The act of officially ending or canceling a law, agreement, or rule.
The abrogation of the law was met with widespread approval.
Abrogation is formed from "ab-" (meaning away) and "rogare" (meaning to ask or propose). The term refers to the act of formally repealing or nullifying a law or agreement, essentially asking it to be taken away.
Think of the idea of 'taking away' ('ab-') a law or proposal ('rogare') — that's what abrogation means.