De or het tunnelsegment?

The correct Dutch article is:

het tunnelsegment

Rule Words ending in -ment: usually het. See the rule

How to use tunnelsegment

the tunnelsegmenthet tunnelsegment
this tunnelsegmentdit tunnelsegment
that tunnelsegmentdat tunnelsegment
our tunnelsegmentons tunnelsegment
your tunnelsegmentjouw tunnelsegment
every tunnelsegmentelk tunnelsegment
which tunnelsegment?welk tunnelsegment?
a big tunnelsegment / the big tunnelsegmenteen groot tunnelsegment, het grote tunnelsegment