LATIN DICTIONARYLexicon Latīnum
suffix

-tātium

-tātium
Classical[taː.ti.ũː]Ecclesiastical[tat.t͡si.um]

Meaning

  1. morphemei-stem genitive plural of -tās

Quick answers

What does -tātium mean in Latin?
-tātium, a suffix, means “i-stem genitive plural of -tās”.
How do you pronounce -tātium?
In classical Latin, [taː.ti.ũː]; in ecclesiastical (church) Latin, [tat.t͡si.um].