white space
n.— «A group of 150 people were handpicked for what he and Alberthal call “their ability to think outside the box.”…They were broken into five “waves” of 30, focusing on different issues…a search for “white space” (uncontested new competitive areas).» —“Management—Avoiding The IBM Trap” by Christopher Lorenz Financial Times (U.K.) Oct. 15, 1993. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...