UNCIAL • DICCIONARIO INGLES.COM • Definition of Uncial

... Irish runes gave place slowly to the Roman alphabet, which came into use, as we have already observed, after St. Patrick's mission. This new writing was in two forms—round and pointed—but both were derived from the Roman half-uncial style. The clear and beautifully-shaped Irish round hand is closely akin to the half-uncial character of fifth and sixth century Latin writings found on the Continent. The Book of Kells, written probably at the end of the seventh century, is the finest example of the ornamental Irish round ...

— Old English Libraries, The Making, Collection, and Use of Books • Ernest A. Savage