designating or of a form of large, rounded letter used in the script of Greek and Latin manuscripts between 300 and 900
noun
an uncial letter
an uncial manuscript
uncial script
See uncial in American Heritage Dictionary 4
also Un·cial(ŭnˈshəl, -sē-əl)
adjective
Of or relating to a style of writing characterized by somewhat rounded capital letters and found especially in Greek and Latin manuscripts of the fourth to the eighth century A.D.
noun
A style of writing characterized by somewhat rounded capital letters. It provided the model from which most of the capital letters in the modern Latin alphabet are derived.