Pronunciation: (un'shē-ul, -shul),[key] —adj. designating, written in, or pertaining to a form of majuscule writing having a curved or rounded shape and used chiefly in Greek and Latin manuscripts from about the 3rd to the 9th centurya.d.
—n. 1. an uncial letter.
2. uncial writing.
3. a manuscript written in uncials.