What does -decim mean in Latin?

-decim, a suffix, means “-teen”.

How do you pronounce -decim?

In classical Latin, [dɛ.kĩː]; in ecclesiastical (church) Latin, [de.t͡ʃim].

suffix

-decim (indeclinable)

Classical[dɛ.kĩː]Ecclesiastical[de.t͡ʃim]

From decem (“ten”); compare the shortening of the -e- to an -i- with decimus (“tenth”).

What does -decim mean in Latin?: -decim, a suffix, means “-teen”.
How do you pronounce -decim?: In classical Latin, [dɛ.kĩː]; in ecclesiastical (church) Latin, [de.t͡ʃim].