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modus operandi

 
American Heritage Dictionary:

mo·dus op·er·an·di

('dəs ŏp'ə-răn'dē, -dī') pronunciation
n., pl., mo·di operandi ('dē, -dī). (Abbr. MO)
  1. A method of operating or functioning.
  2. A person's manner of working.

[New Latin modus operandī : Latin modus, mode + Latin operandī, genitive sing. gerund of operārī, to work.]


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Fowler's Modern English Usage:

modus operandi

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meaning 'a plan or method of working', is pronounced moh-dǝs opǝ-ran-diy, and is printed in roman type. It has the abbreviation MO.

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Barron's Business Dictionary:

modus operandi

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Manner of operation; the means of accomplishing an act; especially, the characteristic method employed by a person in certain acts; the way one (who often is sly in business dealings) operates.

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Roget's Thesaurus:

modus operandi

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noun

  1. A method used in dealing with something: approach, attack, course, line, plan, procedure, tack, technique. See means.
  2. The approach used to do something: fashion, manner, method, mode, style, system, way, wise2. See means.

This entry contains information applicable to United States law only.

[Latin, Method of working.] A term used by law enforcement authorities to describe the particular manner in which a crime is committed.

The term modus operandi is most commonly used in criminal cases. It is sometimes referred to by its initials, M.O. The prosecution in a criminal case does not have to prove modus operandi in any crime. However, identifying and proving the modus operandi of a crime can help the prosecution prove that it was the defendant who committed the crime charged.

Modus operandi evidence is helpful to the prosecution if the prosecution has evidence of crimes committed by the defendant that are similar to the crime charged. The crimes need not be identical, but the prosecution must make a strong and persuasive showing of similarity between the crime charged and the other crimes. The prosecution may introduce evidence from prior or subsequent crimes to prove modus operandi only if the other crimes share peculiar and distinctive features with the crime charged. The features must be uncommon and rarely seen in other crimes, and they must be so distinct that they can be recognized as the handiwork of the same person.

For example, assume that a defendant is on trial for armed robbery. In the robbery the defendant is alleged to have brandished a pistol and ordered the victim to relinquish cash and valuables. Assume further that the defendant has committed armed robbery in the past by brandishing a pistol and demanding cash and valuables. A prosecutor might be able to introduce the evidence into trial to show the defendant's motive, intent, or state of mind, or to identify the weapon used in the crime. However, the prosecutor could not argue to the judge or jury that the robberies were so similar as to demonstrate that it was the defendant who committed that particular robbery, because it is not unusual for a robber to brandish a pistol and demand cash and valuables in the course of an armed robbery.

Now assume that a defendant is charged with robbing a movie theater that was showing the movie Showgirls and that the defendant was wearing a glittering, flamboyant Las Vegas-style cabaret costume during the robbery. Assume further that the prosecution has evidence that the defendant, while dressed as a Las Vegas dancer, has robbed other movie theaters showing the movie Showgirls. The prosecution could introduce this evidence into trial to prove modus operandi and show that it was the defendant who committed the crime, because the method of armed robbery used in the crimes was both similar and distinctive.

When offering evidence to prove modus operandi, the prosecution does not have to prove beyond a reasonable doubt that the other crimes occurred. Rather, the prosecution simply must present sufficient evidence to show that the act took place and was committed by the defendant.

See: criminal law; criminal procedure.

A Latin term used in English to describe an individual or group's habitual way of operating. The term is commonly used when discussing criminal behavior, but does not exclusively refer to criminal behavior. Modus operandi is often shortened to M.O. in both writing and speaking.

Investopedia Says:

A ponzi scheme's M.O. is to take money from new investors and use it to pay off old investors to create the appearance that the old investors are earning a return. A straight-A student's M.O. might be to get all her homework done the day before it is due, never miss a class and visit professors during their office hours once a week.

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Latin Phrase:

modus operandi

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The manner of working.

Random House Word Menu:

categories related to 'modus operandi'

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Random House Word Menu by Stephen Glazier
For a list of words related to modus operandi, see:

 
 
Related topics:
MO (abbreviation)
Mo (business term)
Fly-By-Night (business term)

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Copyrights:

American Heritage Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
 Fowler's Modern English Usage. Oxford University Press. © 1999, 2004 All rights reserved.  Read more
Barron's Business Dictionary. Dictionary of Business Terms. Copyright © 2007 by Barron's Educational Series, Inc. All rights reserved.  Read more
Roget's Thesaurus. Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 byHoughton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.  Read more
$copyright.smallImage.alttext West's Encyclopedia of American Law. West's Encyclopedia of American Law. Copyright © 1998 by The Gale Group, Inc. All rights reserved.  Read more
Investopedia Financial Dictionary. Copyright ©2010, Investopedia.com - Owned and Operated by Investopedia US, A Division of ValueClick, Inc. All rights reserved.  Read more
Answers Corporation Latin Phrase. © 1999-present by Answers Corporation. All rights reserved.  Read more
Random House Word Menu. © 2010 Write Brothers Inc. Word Menu is a registered trademark of the Estate of Stephen Glazier. Write Brothers Inc. All rights reserved.  Read more
 Rhymes. Oxford University Press. © 2006, 2007 All rights reserved.  Read more

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