LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Laetōrius1

Laetōrius m sg (genitive Laetōriī or Laetōrī)
Classical[ɫae̯ˈtoː.ri.ʊs]Ecclesiastical[leˈtɔː.ri.us]

Meaning

  1. a Roman nomen gentile, gens or "family name" famously held by
  2. Marcus Laetorius Mergus, a Roman tribune

Declension

declension
formsingularplural
nominativeLaetōrius—
genitiveLaetōriī
Laetōrī
—
dativeLaetōriō—
accusativeLaetōrium—
ablativeLaetōriō—
vocativeLaetōrī—

Laetōrĭus, a,
I. adj., the name of a Roman gens, Mart. 12, 26, 13 (but lex Plaetoria is the true reading, Cic. Off. 3, 15, 61: id. N. D. 3, 30, 74; Cod. Th. 8, 12, 2).

In the Academy Smith's classical dictionaries

adjectivefirst/second-declension adjective
Laetōrius2
Laetōrius (feminine Laetōria, neuter Laetōrium)
Classical[ɫae̯ˈtoː.ri.ʊs]Ecclesiastical[leˈtɔː.ri.us]

Meaning

  1. adjectiveof or pertaining to the gens Laetoria.

Declension

singular
formmasculinefeminineneuter
nominativeLaetōriusLaetōriaLaetōrium
genitiveLaetōriīLaetōriaeLaetōriī
dativeLaetōriōLaetōriaeLaetōriō
accusativeLaetōriumLaetōriamLaetōrium
ablativeLaetōriōLaetōriāLaetōriō
vocativeLaetōrieLaetōriaLaetōrium
plural
formmasculinefeminineneuter
nominativeLaetōriīLaetōriaeLaetōria
genitiveLaetōriōrumLaetōriārumLaetōriōrum
dativeLaetōriīsLaetōriīsLaetōriīs
accusativeLaetōriōsLaetōriāsLaetōria
ablativeLaetōriīsLaetōriīsLaetōriīs
vocativeLaetōriīLaetōriaeLaetōria

In the Academy Smith's classical dictionaries

Quick answers

What does Laetōrius mean in Latin?
Laetōrius, a proper noun, means “a Roman nomen gentile, gens or "family name" famously held by”.
What is the genitive of Laetōrius?
The genitive singular is Laetōriī. Laetōrius is masculine, second declension.
How do you pronounce Laetōrius?
In classical Latin, [ɫae̯ˈtoː.ri.ʊs]; in ecclesiastical (church) Latin, [leˈtɔː.ri.us].