LATIN DICTIONARYLexicon Latīnum
proper noun · femininethird declension

Plēias

Plēias f (genitive Plēiadis)
Classical[ˈpɫeː.i.as]Ecclesiastical[ˈplɛː.i.as]

Meaning

  1. a Pleiad, one of the Seven Sisters
    Nec superum rector mala tanta Phoronidos ultra ferre potest natumque vocat, quem lucida partu Pleias enixa est letoque det imperat Argum.Now the king of the gods can no longer stand Phoronis’s great sufferings, and he calls his son, born of the shining Pleiad, and orders him to kill Argus.8 CE, Ovid, Metamorphoses 1.668
  2. in pluralthe Pleiades (constellation)
  3. poetica storm, rain
    Modo saeva quierunt aequora. Sic portus fugeret ratis, aspera si te Plias in adversae tenuisset litore Thraces.c. 90 CE, Valerius Flaccius, Argonautica 2.405

Declension

declension
formsingularplural
nominativePlēiasPlēiadēs
Pliadēs
genitivePlēiadis
Pliadis
Plēiadum
Pliadum
dativePlēiadī
Pliadī
Plēiadibus
Pliadibus
accusativePlēiadem
Pliadem
Plēiadēs
Pliadēs
ablativePlēiade
Pliade
Plēiadibus
Pliadibus
vocativePlēiasPlēiadēs
Pliadēs

Plēïas and Plējas (dissyl.), (Plī^as), ădis, f., = Πληϊάς and Πλειάς.
I. One of the Seven Stars, a Pleiad; usually in plur.: Pleiades (Pliades) = Πλειάδες, the constellation of the Seven Stars, the Pleiades or Pleiads (pure Lat. Vergiliae), acc. to the myth, the seven daughters of Atlas and Pleione (Electra, Halcyone, Celaeno, Maia, Sterope, Taygete, and Merope): Pleïas enixa est, Ov. M. 1, 670: Plias, Stat. S. 1, 6, 22; Ov. F. 3, 105: Plĭadum nivosum Sidus, Stat. S. 1, 3, 95.—
II. Poet., transf., a storm or rain, Val. Fl. 4, 268; 2, 405: Pliada movere, to cause the Pleiads to rise, id. 2, 357.

Origins

From Ancient Greek Πλειάδες (Pleiádes).

Quick answers

What does Plēias mean in Latin?
Plēias, a proper noun, means “a Pleiad, one of the Seven Sisters; the Pleiades (constellation); a storm, rain”.
What is the genitive of Plēias?
The genitive singular is Plēiadis. Plēias is feminine, third declension.
How do you pronounce Plēias?
In classical Latin, [ˈpɫeː.i.as]; in ecclesiastical (church) Latin, [ˈplɛː.i.as].