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commander in chief

noun, plural commanders in chief.
Also, Commander in Chief. the supreme commander of the armed forces of a nation or, sometimes, of several allied nations:
The president is the Commander in Chief of the U.S. Army, Navy, and Air Force.
an officer in command of a particular portion of an armed force who has been given this title by specific authorization.
Origin of commander in chief
First recorded in 1635-45 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for commander in chief

commander in chief

noun (pl) commanders in chief
the officer holding supreme command of the forces in an area or operation
the officer holding command of a major subdivision of one military service
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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commander in chief in Culture

commander in chief definition

The role of the United States president as highest ranking officer in the armed forces. The Constitution provides this power, but, through the system of checks and balances, gives Congress the authority to declare war. During periods of war, presidents such as Franklin D. Roosevelt, Lyndon Johnson, George H. W. Bush, William Jefferson Clinton, and George W. Bush have taken active roles as commander in chief.

The 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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