De or het roostervergadering?

The correct Dutch article is:

de roostervergadering

Rule Words ending in -ing: almost always de. See the rule

This word is not in the word lists we use to double-check answers.

How to use roostervergadering

the roostervergaderingde roostervergadering
this roostervergaderingdeze roostervergadering
that roostervergaderingdie roostervergadering
our roostervergaderingonze roostervergadering
your roostervergaderingjouw roostervergadering
every roostervergaderingelke roostervergadering
which roostervergadering?welke roostervergadering?
a big roostervergadering / the big roostervergaderingeen grote roostervergadering, de grote roostervergadering