De or het gastrilogie?

The correct Dutch article is:

de gastrilogie

Rule Words ending in -logie: always de. See the rule
Meaning (Dutch) buiksprekerskunst

How to use gastrilogie

the gastrilogiede gastrilogie
this gastrilogiedeze gastrilogie
that gastrilogiedie gastrilogie
our gastrilogieonze gastrilogie
your gastrilogiejouw gastrilogie
every gastrilogieelke gastrilogie
which gastrilogie?welke gastrilogie?
a big gastrilogie / the big gastrilogieeen grote gastrilogie, de grote gastrilogie

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).