U / ūnĭvĭra
noun

ūnĭvĭra

gen. ūnĭvĭrae · gender feminine · decl. 1st
(, Treb. XXX. Tyrann. 32; Inscr. Grut. 307, 3), , unusvir
a woman that has had only one husband
a woman that has had only one husband (post-class.), Tert. Exhort. ad Castit. 13; Hier. adv. Jovin. 1, 11.—Adj.: univira viduitas, Tert. adv. Psych. 8.