What is Criminology?

Legal Definition
Criminology (from Latin crīmen, "accusation"; and Greek -λογία, -logia) is the scientific study of the nature, extent, management, causes, control, consequences, and prevention of criminal behavior, both on the individual and social levels. Criminology is an interdisciplinary field in both the behavioral and social sciences, drawing especially upon the research of sociologists, psychologists, philosophers, psychiatrists, social anthropologists, as well as scholars of law.

The term criminology was coined in 1885 by Italian law professor Raffaele Garofalo as criminologia. Later, French anthropologist Paul Topinard used the analogous French term criminologie.
-- Wikipedia
Legal Definition
the name given to the branch of science that is devoted to studying crime and criminals.