LATIN DICTIONARYLexicon Latīnum
proper noun · femininethird declension

Tomis

Tomis f sg (genitive Tomis)

Meaning

  1. femininesingularA town of Lower Moesia situated on the coast of Black Sea and famous as the place where Ovid was banished

Declension

declension
formsingularplural
nominativeTomis—
genitiveTomis—
dativeTomī—
accusativeTomem—
ablativeTome—
vocativeTomis—
locativeTomī
Tome
—

Tŏmis, is, f., or Tŏmi, ōrum, m., = Τόμις or Τόμοι,
I. a town of Mœsia, on the Pontus Euxinus, famous as the place to which Ovid was banished.—Form Tomis, Ov. P. 4, 14, 59; id. Tr. 3, 9, 33.—Form Tŏmi, ōrum, m., Stat. S. 1, 2, 254; Claud. Epith. Pall. et Celer. 70; Sid. Carm. 23, 159.—And after the Greek orthog., Tŏmoe, Mel. 2, 2, 5. — Hence,
A. Tŏmītae, ārum, m., the inhabitants of Tomis, Ov. Tr. 1, 2, 85.—
B. Tŏmītānus, a, um, adj., of or belonging to Tomis, Tomitan: terra, Ov. P. 1, 1, 1: harena, id. ib. 1, 6, 49: nurus, id. ib. 3, 8, 10.

Origins

From Ancient Greek Τόμις (Tómis). A folk etymology presented by Ovid in Tristia, Book III, describes the name as being derived from τέμνω (témnō, “to cut”), recounting the Medea story of Greek mythology.

In the Academy Smith's classical dictionaries

Quick answers

What does Tomis mean in Latin?
Tomis, a proper noun, means “A town of Lower Moesia situated on the coast of Black Sea and famous as the place where Ovid was banished”.
What is the genitive of Tomis?
The genitive singular is Tomis. Tomis is feminine, third declension.