noun
collegial system; council system; parliamentary system
A decision-making system where matters are decided through discussion among multiple members, as opposed to a single leader. Often used in political, judicial, or organizational contexts.
日本の内閣は合議制をとっている。
The Japanese Cabinet operates under a collegial system.
裁判所の判断は合議制で行われる。
Court decisions are made through a council system.
議会制 refers specifically to a parliamentary system of government, whereas 合議制 is a broader term for any council-based decision-making process.
合議 (consultation, conference) + 制 (system). The term is a straightforward compound describing a system based on collective discussion.