In government, unicameralism (Latin uni, one + camera, chamber) is the practice of having one legislative or parliamentary chamber. Thus, a unicameral parliament or unicameral legislature is a legislature which consists of one chamber or house. Unicameral legislatures typically exist in small and homogeneous unitary states, where a second chamber is considered unnecessary.
Read more about Unicameralism: Concept, List of Unicameral Legislatures, Unicameralism Within The Subdivisions of The United States, Unicameralism in The Philippines