Definition of parliamentary
1a
: of or relating to a parliament
parliamentary elections parliamentary debate
b
: enacted, done, or ratified by a parliament
a parliamentary grant of money
2
: of or adhering to the parliament as opposed to the king during the English Civil War
… rendered the parliamentary armies … victorious.— David Hume
3
: of, based on, or having the characteristics of parliamentary government
parliamentary democracy
4
: of or relating to members of a parliament
have the leader selected by the parliamentary caucus — London Times
5
: of or according to parliamentary law
parliamentary procedure
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Merriam-Webster unabridged
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Time Traveler for parliamentary
The first known use of parliamentary was in 1604
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