American Dictionary of the English Language

USURPA'TION, noun [supra.] The act of seizing or occupying and enjoying the property of another, without right; as the usurpation of a throne; the usurpation of the supreme power. usurpation in a peculiar sense, denotes the absolute ouster and dispossession of the patron of a church, by presenting a clerk to a vacant benefice, who is thereupon admitted and instituted.