LATIN DICTIONARYLexicon Latīnum
noun · neutersecond declension

sēmaphorum

sēmaphorum n (genitive sēmaphorī)
Classical[seːˈma.pʰɔ.rũː]Ecclesiastical[seˈmaː.fo.rum]

Meaning

  1. traffic light

Declension

declension
formsingularplural
nominativesēmaphorumsēmaphora
genitivesēmaphorīsēmaphorōrum
dativesēmaphorōsēmaphorīs
accusativesēmaphorumsēmaphora
sēmaphorōs
ablativesēmaphorōsēmaphorīs
vocativesēmaphorum
sēmaphore		sēmaphora

Origins

Likely a calque of Italian semaforo (“traffic light”), borrowed from French sémaphore (“signaling system”). Ultimately from Ancient Greek σῆμα (sêma, “sign”) + -φόρος (-phóros, “bearing”).

Quick answers

What does sēmaphorum mean in Latin?
sēmaphorum, a noun, means “traffic light”.
What is the genitive of sēmaphorum?
The genitive singular is sēmaphorī. sēmaphorum is neuter, second declension.
How do you pronounce sēmaphorum?
In classical Latin, [seːˈma.pʰɔ.rũː]; in ecclesiastical (church) Latin, [seˈmaː.fo.rum].