adjutant general Syllabification: (ad·ju·tant gen·er·al)Definition of adjutant general noun (plural adjutants general) the adjutant of a unit having a general staff. (the Adjutant General) (in the US Army) the chief administrative officer. the senior officer in the National Guard of a US state. adjutant general in other Oxford dictionaries Definition of adjutant general in the British & World English dictionary