LATIN DICTIONARYLexicon Latīnum
proper noun · masculinevariously declined, third declension, second declension

Perseus

Perseus m sg (genitive Perseos or Perseī)
Classical[ˈpɛr.sɛu̯s]Ecclesiastical[ˈpɛr.seu̯s]

Meaning

  1. GreekPerseus (son of Jupiter and Danae, killed Medusa and rescued Andromeda)
  2. the constellation Perseus
  3. a male given name from Ancient Greek

Declension

declension
formsingularplural
nominativePerse͡us—
genitivePerseos
Perseī
—
dativePerseō—
accusativePersea
Perseum
—
ablativePerseō—
vocativePerse͡u—

Perseus, ĕi and ĕos (acc., Persea, Ov. M. 4, 610), m., = Περσεύς.
I. Son of Jupiter and Danăē, abandoned by his grandfather Acrisius, but rescued and brought up by Polydectes, king of Seriphus. When grown up, he undertook, at the instigation of Polydectes, an expedition against the islands of the Gorgons, and received from Vulcan a sickle-shaped sword, from Mercury winged shoes, and from Minerva a shield and the flying horse Pegasus. Thus armed, he killed and cut off the head of Medusa, whose look turned every thing into stone. On his way back, he, by means of it, turned into stone a sea-monster to which Andromeda, the daughter of Cepheus, was exposed, and married her. Their son Perses became the progenitor of the Persians. After his death, Perseus was placed among the constellations, Ov. M. 4, 609 sq.; Hyg. Fab. 64; 244; id. Astron. 12; Cic. N. D. 2, 44, 112; Prop. 2, 30 (3, 28), 4; 2, 28 (3, 24), 22; Serv. Verg. A. 4, 246.—
B. Hence,
1. Per-sēus, a, um, adj., of or belonging to Perseus, Persean, Prop. 3 (4), 22, 8. Perseos alter in Argos scinditur, i. e. where Perseus's grandfather, Acrisius, reigned, Stat. Th. 1, 255: Persei culmina montis, the mountain where Perseus first mounted Pegasus, id. ib. 3, 633: Persea Tarsos, founded by Perseus, Luc. 3, 225: Babylon, id. 6, 449.—
2. Per-sēïus, a, um, Persean: Perseia castra sequi, to fight in his army, Ov. M. 5, 128.—
II. The last king of Macedonia, v. Perses, IV.
Persēus, a, um,
I. v. the preced. art., I. B. 1.

Origins

Borrowed from Ancient Greek Περσεύς (Perseús).

In the Academy Smith's classical dictionaries

Quick answers

What does Perseus mean in Latin?
Perseus, a proper noun, means “Perseus (son of Jupiter and Danae, killed Medusa and rescued Andromeda); the constellation Perseus; a male given name from Ancient Greek”.
What is the genitive of Perseus?
The genitive singular is Perseos. Perseus is masculine, variously declined, third declension, second declension.
How do you pronounce Perseus?
In classical Latin, [ˈpɛr.sɛu̯s]; in ecclesiastical (church) Latin, [ˈpɛr.seu̯s].