Uncial a. : 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 These letters were used as early as the 1st century b. c., and were seldom used after the 10th century a. d., being superseded by the cursive style.

Uncial n. : An uncial letter.

Example:
What was in the Biblical manuscipt Uncial 0168 that would cause it to vanish into thin air?

Taxonomy
uncial script, half-uncial, stroke, bow, stem, manuscripts, free encyclopedia, Latin, single stroke, separation, curve, baseline, 8th century, surfaces, Ireland, descenders, the Codex, Byzantine.

Defination from the web:
Uncial is a majuscule script (written entirely in capital letters) commonly used from the 3rd to 8th centuries AD by Latin and Greek scribes. ... In the oldest examples of uncial, such as the De bellis macedonicis manuscript in the British Library, all of the letters are disconnected from ...