Manner or mode of behavior; a criminal’s typical pattern of performing crimes. Method of operation of a criminal. The principle that a criminal is likely to use the same technique repeatedly and that any analysis and record of the technique used...

Modus operandi ("often used in the abbreviated forms M.O. or simply Method) is a Latin phrase, approximately translated as "mode of operation".[1] The plural is modi operandi ("modes of operation"). It is used in law enforcement to describe a...