LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Arachthus

Arachthus m sg (genitive Arachthī)
Classical[aˈrakʰ.tʰʊs]Ecclesiastical[aˈrak.tus]

Meaning

  1. masculinesingularA river of Epirus flowing into the gulf of Ambracia

Declension

declension
formsingularplural
nominativeArachthus—
genitiveArachthī—
dativeArachthō—
accusativeArachthum—
ablativeArachthō—
vocativeArachthe—

Origins

Borrowed from Ancient Greek Ἄραχθος (Árakhthos).

In the Academy Smith's classical dictionaries

GeographyArachthusArachthus (Ἄραχθος, Pol. 22.9; Ptol. 3.13; Liv. 43.22; Plin. Nat. 4.1; Ἄρατθος, Strab. pp. 325, 327; Ἀτατθός, Dicaearch. 42, p. 460, ed. Fuhr; Ἄραιθος…

Quick answers

What does Arachthus mean in Latin?
Arachthus, a proper noun, means “A river of Epirus flowing into the gulf of Ambracia”.
What is the genitive of Arachthus?
The genitive singular is Arachthī. Arachthus is masculine, second declension.
How do you pronounce Arachthus?
In classical Latin, [aˈrakʰ.tʰʊs]; in ecclesiastical (church) Latin, [aˈrak.tus].