duma

UK: /ˈduːmə/ US: (do̅o̅′mə)

WordReference Random House Unabridged Dictionary of American English © 2025

du•ma  (do̅o̅′mə), n. 

1. Government (in Russia prior to 1917) a council or official assembly.
2. Government (cap.) an elective legislative assembly, established in 1905 by Nicholas II, constituting the lower house of parliament.

Also, douma. 

• Gothic dōms judgment (see doom)
• Russian, Old Russian dúma assembly, council (an early homonym with dúma thought); cognate with Bulgarian dúma word, Slovak duma meditation; Slavic *dum- probably
• 1865–70

Collins Concise English Dictionary © HarperCollins Publishers::

duma, douma / ˈduːmə/ noun

1. (usually capital) the elective legislative assembly established by Tsar Nicholas II in 1905: overthrown by the Bolsheviks in 1917
2. (before 1917) any official assembly or council
3. short for State Duma, the lower chamber of the Russian parliament

Etymology: 20th Century: from duma thought, of Germanic origin; related to Gothic dōms judgment