LATIN DICTIONARYLexicon Latīnum
proper noun · femininefirst declension

Cosa

Cosa f sg (genitive Cosae)
Classical[ˈkɔ.sa]Ecclesiastical[ˈkɔː.s̬a]

Meaning

  1. femininesingularan Etruscan city of Etruria, situated on the seacoast

Declension

declension
formsingularplural
nominativeCosa—
genitiveCosae—
dativeCosae—
accusativeCosam—
ablativeCosā—
vocativeCosa—
locativeCosae—

Cŏsa, ae (on coins also Cossa; access. form Cŏsae, ārum, Verg. A. 10, 168), f., = Κόσσα and Κόσσαι.
I. An ancient town in Etruria, not far from the coast, now Ansedonia, above Orbitello, Mel. 2, 4, 9; Liv. Ep. 14; id. 22, 11, 6; Plin. 3, 5, 8, § 51; Vell. 1, 14, 6; Tac. A. 2, 39 al.—Hence,
B. Cŏ-sānus (Coss-), a, um, adj., of Cosa: litus, Plin. 3, 6, 12, § 81: portus, Liv. 22, 11, 6: praedia, Suet. Vesp. 2.—Subst.,
1. Cŏsā-num, i, n.
(a). The territory around Cosa, Caes. B. C. 1, 34.—
(b). A country seat near Cosa, Cic. Att. 9, 6, 2; 15, 27, 1.—
2. Cŏsā-ni, ōrum, m., the inhabitants of Cosa, Liv. 33, 24, 8.—
II. A town in Lucania, in the territory of the Thurini, the same as Consa or Compsa, Caes. B. C. 3, 22 dub.

Origins

From Etruscan 𐌂𐌖𐌔𐌉 (cusi) or 𐌂𐌏𐌔𐌉𐌀 (cosia).

In the Academy Smith's classical dictionaries

GeographyCosaCosa or COSSA. 1. (Κόσσαι, Strab. Ptol.: Eth. Cosanus: Ansedonia) a city of Etruria, situated on the sea-coast between the Portus Herculis and Gravisc…GeographyCosaCosa a town in Gallia, is placed in the Table on a road from Tolosa (Toulouse) to Divona (Cahors). The distance of Cosa from Divona is marked 20 Galli…

Quick answers

What does Cosa mean in Latin?
Cosa, a proper noun, means “an Etruscan city of Etruria, situated on the seacoast”.
What is the genitive of Cosa?
The genitive singular is Cosae. Cosa is feminine, first declension.
How do you pronounce Cosa?
In classical Latin, [ˈkɔ.sa]; in ecclesiastical (church) Latin, [ˈkɔː.s̬a].