Are you looking for the best definition of forensic science? For me, this is the best definition that I gather from searching over the internet. Forensic science is the application of natural sciences to matters of the law. In practice, forensic science draws upon physics, chemistry, biology, and other scientific principles and methods. Forensic science is concerned with the recognition, identification, individualization, and evaluation of physical evidence. Forensic scientists present their findings as expert witnesses in the court of law. Always use the internet for your guidance on the best definition.