- the government's security and counterespionage service that works in liaison with Scotland Yard's Special Branch.
Origin of MI5
M(ilitary) I(ntelligence, Section) 5
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mi5
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?
June 28, 2014
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
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
July 28, 2012
MI5 focuses on domestic threats; MI6 is the British equivalent of the CIA.The FBI’s Scotland Yard Jitters
July 14, 2011
Defend the Realm: The Authorized History of MI5 by Christopher Andrew is one such tome.Her Majesty's Secrets Revealed
November 15, 2009
- 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
Word Origin and History for mi5
1939, from abbreviation of Military Intelligence, followed by the department number.
Online Etymology Dictionary, © 2010 Douglas Harper