LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Isaeus

Isaeus m sg (genitive Isaeī)
Classical[ɪˈsae̯.ʊs]Ecclesiastical[iˈs̬ɛː.us]

Meaning

  1. masculinesingularA celebrated Attic orator

Declension

declension
formsingularplural
nominativeIsaeus—
genitiveIsaeī—
dativeIsaeō—
accusativeIsaeum—
ablativeIsaeō—
vocativeIsaee—

Īsaeus, i, m., = Ἰσαῖος.
I. A Grecian orator of Chalcis, instructor of Demosthenes, Quint. 12, 10, 22.—
II. A contemporary of the younger Pliny, also a Grecian orator, Plin. Ep. 2, 3 init.; Juv. 3, 74.

Origins

From Ancient Greek Ἰσαῖος (Isaîos).

In the Academy Smith's classical dictionaries

Quick answers

What does Isaeus mean in Latin?
Isaeus, a proper noun, means “A celebrated Attic orator”.
What is the genitive of Isaeus?
The genitive singular is Isaeī. Isaeus is masculine, second declension.
How do you pronounce Isaeus?
In classical Latin, [ɪˈsae̯.ʊs]; in ecclesiastical (church) Latin, [iˈs̬ɛː.us].