LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Catalaunī

Catalaunī m pl (genitive Catalaunōrum)
Classical[ka.taˈɫau̯.niː]Ecclesiastical[ka.taˈlaːu̯.ni]

Meaning

  1. A tribe of Gallia Belgica

Declension

declension
formsingularplural
nominative—Catalaunī
genitive—Catalaunōrum
dative—Catalaunīs
accusative—Catalaunōs
ablative—Catalaunīs
vocative—Catalaunī

Cătălauni and Cătĕlauni, ōrum, m.,
I. a tribe in Gallia Belgica, near the mod. Chālons-sur-Marne, Eutr. 9, 13; Amm. 15, 11, 10.—Hence, Cătălaunĭcus, a, um, adj., of or at Catalauni: clades, Eum. Pan. Const. 4.

Origins

Of Celtic/Gaulish origin, probably from *Katu-uellauni, a plural form of *Katuwalos, from Proto-Celtic *Katuwalos, a name loosely meaning "chiefs of battle."

In the Academy Smith's classical dictionaries

GeographyCatalauniEth. Catalauni or CATELAUNI. The Notitia of the provinces mentions the Civitas Catalaunorum among the cities of the Provincia of Belgica Secunda, and …

Quick answers

What does Catalaunī mean in Latin?
Catalaunī, a proper noun, means “A tribe of Gallia Belgica”.
What is the genitive of Catalaunī?
The genitive singular is Catalaunōrum. Catalaunī is masculine, second declension.
How do you pronounce Catalaunī?
In classical Latin, [ka.taˈɫau̯.niː]; in ecclesiastical (church) Latin, [ka.taˈlaːu̯.ni].