from
The Collaborative International Dictionary of English v.0.48
Uncial \Un"cial\, a. [L. uncialis amounting to the twelfth part
of a pound or a foot, from uncia the twelfth part of a pound
or of a foot, an ounce, an inch: cf. F. oncial. See {Inch} a
measure.]
Of, pertaining to, or designating, a certain style of letters
used in ancient manuscripts, esp. in Greek and Latin
manuscripts. The letters are somewhat rounded, and the
upstrokes and downstrokes usually have a slight inclination.
These letters were used as early as the 1st century b. c.,
and were seldom used after the 10th century a. d., being
superseded by the cursive style.
[1913 Webster]