IPA: //bɪˈkæm.ə.rəl.ɪ.zəm//
KK: /bɪˈkæmərəlɪzəm/
The system of having two separate chambers in a legislative body, each with its own powers and responsibilities, to ensure checks and balances in government.
The United States Congress operates under a system of bicameralism, consisting of the House of Representatives and the Senate.
Bicameralism → It is formed from "bi-" (meaning two) and "camera" (from Latin, meaning chamber) and "-lism" (a suffix indicating a system or practice). The term refers to a political system that has two separate chambers or houses in its legislature.
Think of 'two' ('bi-') 'chambers' ('camera') working together in a political system — that's what bicameralism means.