(colloquial) A person or thing's normal mode of operation.
The definition of a modus operandi is a way of doing something.
An example of modus operandi is driving on the left side of the road in the US.
(law enforcement) A known criminal's established habits and mode of work when committing specific offences, especially fraud, matched with characteristics of an unsolved crime to narrow down (limit to a specific list) or profile suspects.
Origin of modus-operandi
New Latin modus operandī Latin modusmode Latin operandīgenitive sing. gerund ofoperārīto work
American Heritage Dictionary of the English Language, 5th Edition
From Latinmodus operandi, from modus (“manner, method") and operandi (“of working")
Modus-operandi Sentence Examples
The internet has become part of the terrorist's modus operandi.
The modus operandi is briefly as follows: The position of the fracture is determined by electrical tests from both ends, with more or less accuracy, depending on the nature of the fracture, but with a probable error not exceeding a few miles.
If the modus operandi was akin to soothsaying it was only because that special form of soothsaying was peculiar to the particular cult of that god, and even this as a secondary development.
Clear indications of a primitive magical modus operandi appear as survivals in the narratives of the pre-exilian prophets.
Withdraw this foundation of bodies as inter-resisting forces causing one another in collision to form a joint mass with a common velocity but without penetration, and the evidence of the third law disappears; for in the case of attractive forces we know nothing of their modus operandi except by the analogy of the collision of inter-resisting bodies, which makes us believe that something similar, we know not what, takes place in gravity, magnetism, electricity, &c. Now, Mach, though he occasionally drops hints that the discovery of the law of collision comes first, yet never explains the process of development from it to the third law of motion.