An abbreviation for 'commander'; a person who holds a position of authority or control, especially in military contexts.
Short for 'commander', from Old French 'commander' (to commit, order), from Latin 'commendare' (to entrust). CMDR is a modern abbreviation used in military communication and writing.
Military abbreviations like CMDR evolved for efficiency in radio communication and written orders—where every character mattered; many remain in use even though their original space-saving function is obsolete.
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