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English definition of “commander”

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noun [C] uk   /kəˈmɑːn.dər/ us    /-ˈmæn.dɚ/
C2 ( also Commander) an officer who is in charge of a military operation, or an officer of a particular rank in the British Royal Navy: Commander Phillips/James Phillips [as form of address] Yes, Commander.
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(Definition of commander from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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