What is "nonvisible"

Usage examples of "nonvisible".

It was open on London, set for nonpatency and a nonvisible matrix on the far side: this side would have been invisible to her, too, except that she could see where Arhu had carefully laid in the "graphic" Speech-form of her name, and Urruah's and his own, in the portion of the spell matrix which controlled selective visibility and patency configurations.

Onofre said to Joe Mondragon one afternoon while they were selling hamburgers and cotton candy at the Chamisaville Moto-Cross race, which was, as usual, taking place on a nonvisible track fifteen feet from Joe's trailer.