uncĭa, ae, f., = οὐγκία (Siculian and Etruscan; v. Müller, Etrusk. 1, p. 309 sq.) [akin to unus, unicus, unio; Gr. οἰνός], the twelfth part of any thing, a twelfth.
I Lit.
1 Of inheritances: mortuus Babullius. Caesar, opinor, ex unciā, etsi nihil adhuc: sed Lepta ex triente, Cic. Att. 13, 48, 1: heres, Sen. Contr. 4, 28 med. ; Cod. Just. 5, 27, 2.—Of a debt: non erit uncia tota, Mart. 9, 3, 5.—
2 To denote a rate of interest, one twelfth per cent. a month, i. e. reckoning by the year, one per cent. , Dig. 26, 7, 47, § 4.—
3 As a weight, the twelfth part of a pound (as or libra), an ounce , Rhemn. Fan. Pond. 28; Plaut. Men. 3, 3, 3: uncia aloës, Plin. 20, 13, 51, § 140: Falerni, Mart. 1, 107, 3.—
4 As a measure of land, one twelfth of a jugerum, Col. 5, 1, 10.—
5 As a measure of length, the twelfth part of a foot , an inch , Front. Aquaed. 24; Plin. 6, 34, 39, § 214.—
II Transf., a trifle , bit , atom : neque piscium ullam unciam hodie Pondo cepi, Plaut. Rud. 4, 2, 8; Juv. 11, 131: nulla de nostro nobis uncia venit apro, Mart. 9, 49, 12.