Definition of unicameral in US English:

unicameral

adjective

  • (of a legislative body) having a single legislative chamber.

    • ‘The Croatian Parliament, also known as the Sabor, became a unicameral body after its Upper House (Chamber of Counties) was eliminated by constitutional amendment in March 2001.’
    • ‘The highest legislative body is a unicameral parliament called the State Great Hural with 76 elected members.’
    • ‘The legislative branch is the unicameral National Assembly, which has 121 members elected by popular vote to serve five-year terms.’
    • ‘She has since been re-elected to the Seimas (Lithuania's unicameral legislative body) as a member of the Women's Party.’
    • ‘Since independence in 1966, Botswana has been a multiparty democracy with elections held every five years to a unicameral legislature, the National Assembly, which has been dominated by the Botswana Democratic Party.’

Origin

Mid 19th century: from uni- ‘one’ + Latin camera ‘chamber’ + -al.

Pronunciation

unicameral

/ˌyo͞onəˈkam(ə)rəl//ˌjunəˈkæm(ə)rəl/