LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Helviī

Helviī m pl (genitive Helviōrum)
Classical[ˈhɛɫ.wi.iː]Ecclesiastical[ˈɛl.vi.i]

Meaning

  1. A tribe of Gallia Narbonensis, which bordered on the Arverni

Declension

declension
formsingularplural
nominative—Helviī
genitive—Helviōrum
dative—Helviīs
accusative—Helviōs
ablative—Helviīs
vocative—Helviī

Helvĭi (Helvi), ōrum, m.,
I. a people of Gallia Narbonensis, whose capital, called Alba Helvorum and Alba Helvia, was celebrated for its wine, now Alps, in Viviers, Départ. Ardèche, Caes. B. G. 7, 7; 75; id. B. C. 1, 35; Plin. 3, 4, 5, § 36; 14, 3, 4, § 43. —
II. Deriv.: Helvĭcus, a, um, adj., of or belonging to the Helvii, Helvian: vinum, Plin. 14, 1, 3, § 18.

In the Academy Smith's classical dictionaries

Quick answers

What does Helviī mean in Latin?
Helviī, a proper noun, means “A tribe of Gallia Narbonensis, which bordered on the Arverni”.
What is the genitive of Helviī?
The genitive singular is Helviōrum. Helviī is masculine, second declension.
How do you pronounce Helviī?
In classical Latin, [ˈhɛɫ.wi.iː]; in ecclesiastical (church) Latin, [ˈɛl.vi.i].