The manuscripts typically classified as “uncial” are so designated to differentiate them from papyrus manuscripts. In a sense, this is a misnomer because the real difference has to do with the material they are written on—vellum (treated animal hide) as compared to papyrus—not the kind of letters used. Indeed, the papyri are also written in uncials (capital letters), but the term “uncial” typically describes the majuscule lettering that was prominent in fourth-century biblical texts, such as in א, A, B, C.