noun
nonparliamentary party association
A political group that operates outside the legislature, often to influence policy or support a party without holding parliamentary seats.
戦前の日本では、院外団が政治に大きな影響を与えた。
In prewar Japan, nonparliamentary party associations had a significant influence on politics.
Refers to activities or groups within the parliament, as opposed to 院外団 which operates outside it.
Compound of 院外 (outside the parliament) and 団 (group, association).