DIVISUM IMPERIUM
divisum imperium (di-vI-z<<schwa>>m im-peer-ee-<<schwa>>m), n.[Latin “a divided
empire”] Divided jurisdiction; alternate jurisdiction, as of courts.
“This main sea begins at the low-water-mark. But between the high-water-mark and the
low-water-mark, where the sea ebbs and flows, the common law and admiralty have divisum
imperium, an alternate jurisdiction; one upon the water, when it is full sea; the other upon the land,
when it is an ebb.” 1 William Blackstone, Commentaries on the Laws of England 107 (1765). [Blacks Law 8th]