noun
adversarial system
Legal term referring to a system where the parties control the proceedings, as opposed to an inquisitorial system.
日本の民事訴訟は当事者主義を採用している。
Japanese civil litigation adopts the adversarial system.
Inquisitorial system where the court takes an active role, contrasting with 当事者主義.
Compound of 当事者 (party concerned) and 主義 (principle, doctrine).