commander in chief

noun phrase

Definition of commander in chief

: one who holds the supreme command of an armed force

First Known Use of commander in chief

1654, in the meaning defined above

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The first known use of commander in chief was in 1654

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Cite this Entry

“Commander in chief.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2021.

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More Definitions for commander in chief

commander in chief


English Language Learners Definition of commander in chief

: a person who is in charge of all the armed forces of an entire country

commander in chief

plural commanders in chief

Kids Definition of commander in chief

: a person who holds supreme command of the armed forces of a nation

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