Other forms: parliamentarily
The adjective parliamentary refers to anything related to the formal rules, procedures, or discussions of a governing body that makes laws.
The word parliamentary traces back to the French word parlement, meaning "talk" or "discussion." Many democratic countries, including Canada and France, have primary governing bodies called parliaments, groups of officials who deliberate and vote on laws. Anything related to a parliament can be referred to as parliamentary — e.g., parliamentary rules and procedures. The principal lawmaking body of the U.S. is not called a parliament, but the U.S. Congress also has parliamentary procedures — rules that govern decision-making and debate.