A system of government with two legislative chambers or houses, like a Senate and House of Representatives.
From bi- (two) + camera (chamber, from Latin camera) + -ism (a system or practice). The term emerged in political science as democratic constitutions adopted two-house legislatures.
Bicameralism is one of those 'boring' government words that actually solves fascinating problems—the upper chamber (Senate) was supposed to be wiser and more conservative, while the lower chamber (House) represented regular people, supposedly creating balance.
Complete word intelligence in one call. Free tier — 50 lookups/day.