noun
General Slang
XO
eks-OH · noun · informal
Executive Officer — the second-in-command of a unit.
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Definitions
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'Executive Officer' — the second-in-command of a military unit or ship, responsible for administration and day-to-day operations, standing in for the commanding officer as needed.
“"The CO's forward — take it up with the XO."”
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XO In A Sentence
"The CO's forward — take it up with the XO."
Origin & Usage
US military abbreviation of 'executive officer'.
People Also Ask
What does XO mean in the military?
XO stands for 'Executive Officer' — the second-in-command of a unit or ship, handling administration and day-to-day operations and standing in for the commander when needed.
How is the XO different from the CO?
The CO (Commanding Officer) holds overall command, while the XO is the deputy who runs internal operations and steps up in the CO's absence.
How is XO used in speech?
It refers to the deputy commander, as in 'the CO's forward — take it up with the XO'.
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