Adoptionism

A heresy originating in the 8th century claiming that Christ as Man was only the adoptive Son of God. It was advocated by Elipandus of Toledo and Felix of Urgel, but condemned by Pope Adrian I in 785 and 794. Abelard renewed this teaching in the 12th century, and his neo-Adoptionism was condemned by Pope Alexander III in 1177. For a more detailed explanation, see the Catholic Encyclopedia article.

- from New Catholic Dictionary; this is part of a series of articles on heresies and blasphemies