Which term defines the physical act of committing a crime?

The term that defines the physical act of committing a crime is "Actus reus." This concept is fundamental in criminal law and refers to the actual conduct or action that constitutes a criminal offense. It involves the totality of the act, which can include not only the physical movements or behaviors that lead to the crime but also scenarios where a failure to act, or an omission, may lead to liability in certain legal contexts.

Mens rea, which relates to the mental state or intention behind committing a crime, complements actus reus in establishing criminal liability, but it does not define the physical act itself. Jurisdiction refers to the authority of a court to hear a case and make legal judgments, while testimony involves the statements made by witnesses during legal proceedings, neither of which pertains to the act of committing an offense. Thus, "Actus reus" is the accurate term for the physical component of a crime.