Adjective : invisible fluid. ,an invisible seam. ,invisible differences. ,Goodwill is an invisible asset to a business.    From Dictionary.com. 

I think the cheapness of storebought clothes now is partly a function of the "invisibleness" of the labor that goes into the materials and sewing...but that's a big topic for another post.    From Wordnik.com.  [Yet Another Midriff Variation - A Dress A Day] Reference

I couldn't tell from the photo how they worked, I chalked it up to their invisibleness.    From Wordnik.com.  [Make Invisible Speakers By Sacrificing Six Books | Lifehacker Australia] Reference

Three stories in three different historical periods, all of them previously visited by the director, dealing with romance and the way politics affect personal lives - and three stories told in an almost comatose rhythm, as Hou likes to tell stories, grasping invisibleness and the importance of apparently empty moments in a melancholic style.    From Wordnik.com.  [GreenCine Daily] Reference

His notion of invisibleness of African Americans became a central theme and metaphor regarding race in America.).    From Wordnik.com.  [One African American Reading List] Reference

Australian open invisibleness.    From Wordnik.com.  [Gaea Times (by Simple Thoughts) Breaking News and incisive views 24/7] Reference