Definition of second in command noun from the Oxford Advanced Learner's Dictionary


second in command

BrE BrE//ˌsekənd ɪn kəˈmɑːnd//
; NAmE NAmE//ˌsekənd ɪn kəˈmænd//
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a person who has the second highest rank in a group and takes charge when the leader is not there For twenty years he served the business as second in command to his father. his second in command, Major Thursby
See the Oxford Advanced American Dictionary entry: second in command