The Collaborative International Dictionary
Consociational
Consociational \Con*so`ci*a"tion*al\, a. Of or pertaining to a consociation. [U.S.]
Wiktionary
consociational
a. (context politics of a state English) Having major internal divisions along ethnic, religious, or linguistic lines, with none of the divisions large enough to form a majority group, yet nonetheless stable due to consultation among the elites of each of its major social groups.