But as soon as she makes an incision on the lump, a stream of thick gray goo — almost like liquid cement — streams forth. (businessinsider.com)
Soon gray goo was turning up in video games, magazine stories, and delightfully bad Hollywood action flicks (see, for instance, the last G.I. Joe movie). (discovermagazine.com)
The world is awash in nanomaterials, but they are not the self - replicating specks that turn the world to gray goo in science fiction novels. (discovermagazine.com)