De or het codicologie?

The correct Dutch article is:

de codicologie

Rule Words ending in -logie: always de. See the rule
Meaning (Dutch) kennis en leer van oude handschriften, handschriftkunde

How to use codicologie

the codicologiede codicologie
this codicologiedeze codicologie
that codicologiedie codicologie
our codicologieonze codicologie
your codicologiejouw codicologie
every codicologieelke codicologie
which codicologie?welke codicologie?
a big codicologie / the big codicologieeen grote codicologie, de grote codicologie

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