De or het diabetologie?

The correct Dutch article is:

de diabetologie

Rule Words ending in -logie: always de. See the rule
Meaning (Dutch) (medisch) wetenschap aangaande suikerziekte

How to use diabetologie

the diabetologiede diabetologie
this diabetologiedeze diabetologie
that diabetologiedie diabetologie
our diabetologieonze diabetologie
your diabetologiejouw diabetologie
every diabetologieelke diabetologie
which diabetologie?welke diabetologie?
a big diabetologie / the big diabetologieeen grote diabetologie, de grote diabetologie

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