Webster's Revised Unabridged Dictionary · 1913

Arrogation

Arrogation ({not transcribed}) , noun

[Latin arrogatio, from arrogare. Compare Adrogation.]

1.
The act of arrogating, or making exorbitant claims; the act of taking more than one is justly entitled to. — Hall
2.
(Civ. Law) Adoption of a person of full age.