We make available here an article, “What Does ‘Inerrancy’ Mean?” by Arthur Carl Piepkorn (1907-1973), one of the more significant 20th-century Lutheran theologians in America. In this article Piepkorn usefully traces the genealogy of the term ‘inerrancy’ and its use by the Lutheran scholastics. He then presents an overview of the difficulties that the concept poses before finally moving to a theological consideration of it. The piece was originally published in Concordia Theological Monthly 36:8 (September 1965), pp. 577-593.