A system of government in which the legislature is divided into two chambers, an upper and lower house.

Two separate legislative chambers.  At the federal level, the Congress is divided into the Senate and House of Representatives.  The legislative branch in every state except Nebraska is also comprised of two chambers.

  A bicameral parliament is one which has two chambers, a lower house and an upper house.  The lower house is often called the legislative assembly or house of assembly and, in parliamentary systems, is the house where the government is formed.  The Canadian parliament is bicameral with the non-elected Senate as the upper house, the House of Common [..]

Bicameralism refers to a restraint on legislative power embodied in the state constitution vesting the legislative power in a two-house legislative body and requiring that all bills must be adopted by [..]