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Synonyms

commanding officer

American  

noun

  1. Army. a commander of any rank from second lieutenant to colonel.

commanding officer British  

noun

  1. an officer in command of a military unit

"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

Etymology

Origin of commanding officer

First recorded in 1790–1800

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Maybe not in “Star Trek,” where survivors of its all-absorbing Borg collective include a Starship captain and a commanding officer.

From Salon • Dec. 29, 2025

O’Kane’s underwater adventures began as the executive officer aboard USS Wahoo, alongside its commanding officer, Dudley Morton, an aggressive wartime submarine commander.

From The Wall Street Journal • Nov. 7, 2025

"Dutch people, when we are born, we know we're going to fight the water," said commanding officer Corporal Michel Vrancken.

From Barron's • Nov. 7, 2025

Lt Col Matt Woodward, commanding officer of the Household Cavalry Mounted Regiment, said what happened in April last year was unusual, because "the horses got lost".

From BBC • Oct. 10, 2025

I wagged my finger at him like a commanding officer.

From "Fever 1793" by Laurie Halse Anderson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.