Definition of Floating zone
A concept in zoning whereby land use is predetermined by reserving specified portions of an entire area for particular uses while not immediately assigning particular parcels to a certain use. Such a zone has no defined boundaries. It is conceived as floating over the entire area where it may eventually be established. Nick v. Planning & Zoning Com’n of Town of East Hampton, 6 Conn.App. 110, 503 A.2d 620, 622. See also Zoning.
That's the definition of Floating zone in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.