multicameralismEtymologyFrom multi- + cameral + -ism.nounA system in which a legislature is divided into three or more deliberative assemblies, which are commonly called "chambers" or "houses".“Multicameralism remained commonplace within Europe until approximately 1800, after which most European governments gradually became bicameral, partly as a consequence of reforms associated with the French Revolution, but also as a consequence of new constitutional theories and subsequent pressures for constitutional reform.”