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modus operandi

[moh-duh s op-uh-ran-dee, -dahy; Latin moh-doos oh-pe-rahn-dee] /ˈmoʊ dəs ˌɒp əˈræn di, -daɪ; Latin ˈmoʊ dus ˌoʊ pɛˈrɑn di/
noun, plural modi operandi
[moh-dee op-uh-ran-dee, moh-dahy op-uh-ran-dahy; Latin moh-dee oh-pe-rahn-dee] /ˈmoʊ di ˌɒp əˈræn di, ˈmoʊ daɪ ˌɒp əˈræn daɪ; Latin ˈmoʊ di ˌoʊ pɛˈrɑn di/ (Show IPA)
mode of operating or working.
Origin of modus operandi
1645-55; < Latin modus operandī Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for modus operandi

modus operandi

/ˈməʊdəs ˌɒpəˈrændiː; -ˈrændaɪ/
noun (pl) modi operandi (ˈməʊdiː ˌɒpəˈrændiː, ˈməʊdaɪ ˌɒpəˈrændaɪ)
procedure; method of operating
Word Origin
C17: from Latin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for modus operandi

"way of doing or accomplishing," 1650s, Latin, literally "mode of operating" (see modus). Abbreviation m.o. is attested from 1955.

Online Etymology Dictionary, © 2010 Douglas Harper
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modus operandi in Culture
modus operandi (m.o.) [(moh-duhs op-uh-ran-dee, op-uh-ran-deye)]

The way someone does something; a characteristic method: “Her modus operandi in buying a new car always included a month of research.” This phrase, often abbreviated “m.o.,” is used by police to describe a criminal's characteristic way of committing a crime. From Latin, meaning “method of operation.”

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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