De or het steenglooiing?

The correct Dutch article is:

de steenglooiing

Rule Words ending in -ing: almost always de. See the rule

How to use steenglooiing

the steenglooiingde steenglooiing
this steenglooiingdeze steenglooiing
that steenglooiingdie steenglooiing
our steenglooiingonze steenglooiing
your steenglooiingjouw steenglooiing
every steenglooiingelke steenglooiing
which steenglooiing?welke steenglooiing?
a big steenglooiing / the big steenglooiingeen grote steenglooiing, de grote steenglooiing