Attested 1712, from Late Latin unciales (“uncials”), unciales litterae (“uncial letters”) (Jerome), plural of uncialis (“pertaining to one twelfth part, ounce, or inch”), from uncia (“one twelfth part, ounce, inch”). The literal meaning is unclear: some references indicate "inch-high letters", but see “Uncial script” in Wikipedia.
Meanings
(not-comparable) Of or relating to a majuscule style of writing with unjoined, rounded letters, originally used in the 4th–9th centuries.
This, also written in black letter, we found inscribed on a second parchment that was in the coffer, apparently somewhat older in date than that on which was inscribed the mediæval Latin translation of the uncial Greek of which I shall speak presently. 1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887, →OCLC:
fi unsiaalinen (of or related to uncial) · es uncial (of or related to uncial) · de unzial (of or related to uncial) · pl uncjalny (of or related to uncial)
Attested 1712, from Late Latin unciales (“uncials”), unciales litterae (“uncial letters”) (Jerome), plural of uncialis (“pertaining to one twelfth part, ounce, or inch”), from uncia (“one twelfth part, ounce, inch”). The literal meaning is unclear: some references indicate "inch-high letters", but see “Uncial script” in Wikipedia.