Etymology 1 
Attested 1650, from Latin uncia (“one twelfth part, ounce, inch”).
Etymology 2 
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.
- Of, or relating to a majuscule style of writing with unjoined, rounded letters, originally used in the 4th–9th centuries.
uncial (plural uncials)
Derived terms 
Related terms 
- “uncial” in Dictionary.com Unabridged, v1.1, Lexico Publishing Group, 2006.
uncial m and f (plural unciales)
uncial f (plural unciales)