LATIN DICTIONARYLexicon Latīnum
noun · femininethird declension

Īsis

Īsis f sg (genitive Īsis or Īsidis)
Classical[ˈiː.sɪs]Ecclesiastical[ˈiː.s̬is]

Meaning

  1. Isis.
  2. A river of Pontus

Declension

declension
formsingularplural
nominativeĪsis—
genitiveĪsis
Īsidis		—
dativeĪsī
Īsidī		—
accusativeĪsem
Īsidem		—
ablativeĪse
Īside		—
vocativeĪsis—

Īsis, is, and ĭdis. f., = Ἶσις,
I. the Egyptian goddess Isis, Cic. N. D. 3, 19, 47; Ov. M. 9, 772; Tac. G. 9; Luc. 9, 158.—
B. Hence,
1. Isidis crinis, an unknown plant, Juba ap. Plin. 13, 25, 52, § 142.—
2. Isidis sidus, the planet Venus, Plin. 2, 8, 6, § 37.—
II. Deriv. īsĭăcus, a, um, adj., = Ἰσιακός, of or belonging to Isis: conjectores, Enn. ap. Cic. Div. 1, 58, 132: focus, Ov. P. 1, 1, 52: Isiacae sacraria lenae, Juv. 6, 488.—Subst.: īsĭă-cus, i, m., a priest of Isis, Suet. Dom. 1; Val. Max. 7, 3, 8; Plin. 27, 7, 29, § 53 al.

Origins

Borrowed from Ancient Greek Ἶσῐς (Îsĭs), itself from Egyptian st-t:H8-B1 (ꜣst).

Descendants
  • EnglishIsis
  • FrenchIsis
  • ItalianIside
  • SpanishIsis
  • SicilianÌsiti
  • SicilianIsis

In the Academy Smith's classical dictionaries

Biography & mythologyIsisIsis (Ἶσις), one of the principal Egyptian divinities. The ideas entertained about her and her worship underwent the greatest changes and modification…GeographyIsisIsis (ὁ Ἴσις), a navigable river on the east coast of the Euxine between the Acinasis and Mogrus, from each of which its distance amounted to 90 stadi…

Quick answers

What does Īsis mean in Latin?
Īsis, a noun, means “Isis.; A river of Pontus”.
What is the genitive of Īsis?
The genitive singular is Īsis. Īsis is feminine, third declension.
How do you pronounce Īsis?
In classical Latin, [ˈiː.sɪs]; in ecclesiastical (church) Latin, [ˈiː.s̬is].