De or het takendiscussie?

The correct Dutch article is:

de takendiscussie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use takendiscussie

the takendiscussiede takendiscussie
this takendiscussiedeze takendiscussie
that takendiscussiedie takendiscussie
our takendiscussieonze takendiscussie
your takendiscussiejouw takendiscussie
every takendiscussieelke takendiscussie
which takendiscussie?welke takendiscussie?
a big takendiscussie / the big takendiscussieeen grote takendiscussie, de grote takendiscussie

Dutch words ending in takendiscussie

kerntakendiscussie

In compound words, the last part decides the article. See the rule