MI5

[ em-ahy-fahyv ]

/ ˈɛmˌaɪˈfaɪv /

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noun (in Great Britain)

the government's security and counterespionage service that works in liaison with Scotland Yard's Special Branch.

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Origin of MI5

M(ilitary)I(ntelligence, Section) 5

Words nearby MI5

mho, M.H.R., M.H.W., mHz, mi, MI5, MI6, MIA, Miami, mia-mia, Miami Beach

How to use MI5 in a sentence

Are you unaware of the role agent provocateurs, special branch and MI5 have played in undermining us?
Did MI5 Spies Troll J.K. Rowling Over Scottish Independence?|The Telegraph|June 28, 2014|DAILY BEAST
At Risk By Stella Rimington The first novel by the best spy storyteller today, the former head of MI5.
Our Favorite Books of 2012: Tina Brown, Andrew Sullivan, and Others’ Picks|The Daily Beast|December 11, 2012|DAILY BEAST
At the start of the war, on the orders of his Soviet handler, he successfully “coat trailed” his way into MI5.
War’s Most Powerful Weapon: Double Agents from WWII to Al Qaeda|Ben Macintyre|July 28, 2012|DAILY BEAST
Arthur Owens spent years in exile, reviled as a Nazi spy, but he actually was a double agent working with MI5.
Second ‘Underwear Bomber,’ Kim Philby, and Other Notorious Double Agents|The Daily Beast|May 10, 2012|DAILY BEAST

It remains to be seen whether MI5 and MI6 will have their way.
Smoke and Mirrors in the British Battle Over ‘Secret Justice’|Cori Crider|April 6, 2012|DAILY BEAST

British Dictionary definitions for MI5

MI5

abbreviation for

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