This article considers John Owen’s introduction of the word ‘atonement’ as a term of art for Christ’s satisfaction in response to Socinian attacks on that doctrine. Owen’s innovation complicates the use of atonement theories in the dogmatic history of atonement by F. C. Baur and his successors, because Owen’s account of Christ’s work extends beyond satisfaction, and he uses ‘atonement’ to emphasise not the mechanism of that work but its relational necessity. Even as the framework of atonement theories obscures these aspects of Owen’s work, his novel use of ‘atonement’ lays the foundation for satisfaction to become an atonement theory in Baur’s sense.