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Definition of Senior chief petty officer
1. Noun. A senior noncommissioned officer in the Navy or Coast Guard with a rank comparable to master sergeant in the Army.
Definition of Senior chief petty officer
1. Noun. (US Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above chief petty officer and below master chief petty officer. ¹
¹ Source: wiktionary.com