LATIN DICTIONARYLexicon Latīnum
adverb

sextum

sextum (not comparable)
Classical[ˈsɛk.stũː]Ecclesiastical[ˈsɛk.stum]

Meaning

  1. not comparablefor the sixth time

Charlton Lewis's shorter dictionary for students: the same scholarship in plain, modern definitions.

sextum adv.
sextus, for the sixth time : sextum consul, L.

Origins

Adverbial accusative of sextus.

Quick answers

What does sextum mean in Latin?
sextum, a adverb, means “for the sixth time”.
How do you pronounce sextum?
In classical Latin, [ˈsɛk.stũː]; in ecclesiastical (church) Latin, [ˈsɛk.stum].