Forensic: Dealing with the application of scientific knowledge to legal problems and legal proceedings as, for example, in forensic anthropology, forensic dentistry, forensic experts, forensic medicine (legal medicine), forensic pathology, forensic science, etc.
The word "forensic" has an unusual history. It comes from the Latin word "forensis" pertaining to a forum. In ancient Rome the forum was a market place where people gathered, not just to buy things, but also to conduct all kinds of business, including that of public affairs. The meaning of "forensic" later came to be restricted to refer to the courts of law. The word entered English usage in 1659.