follow Dictionary.com

Stories We Like: Novels For Language Lovers

MI5

[em-ahy-fahyv] /ˈɛmˌaɪˈfaɪv/
noun, (in Great Britain)
1.
the government's security and counterespionage service that works in liaison with Scotland Yard's Special Branch.
Origin
M(ilitary) I(ntelligence, Section) 5
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for MI5

MI5

abbreviation
1.
Military Intelligence, section five; a former official and present-day popular name for the counterintelligence agency of the British Government
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
Cite This Source
Word Origin and History for MI5

1939, from abbreviation of Military Intelligence, followed by the department number.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for MI5

Most English speakers likely know this word

Word Value for MI5

0
0
Scrabble Words With Friends

Nearby words for mi5