De or het agologie?

The correct Dutch article is:

de agologie

Rule Words ending in -logie: always de. See the rule
Meaning (Dutch) (wetenschap) wetenschap van het opvoedend en vormend handelen. (agogiek)

How to use agologie

the agologiede agologie
this agologiedeze agologie
that agologiedie agologie
our agologieonze agologie
your agologiejouw agologie
every agologieelke agologie
which agologie?welke agologie?
a big agologie / the big agologieeen grote agologie, de grote agologie

Dutch words ending in agologie

andragologie

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

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