term:

Inquisitorial

inquisitorial adj

1 : constituting or relating to a system of justice in which the judge conducts an inquiry developing the facts of the litigant's case compare accusatorial, adversary
2 : having the authority to conduct official investigations

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.